Find concave up and down calculator

If f '' > 0 on an interval, then f is concave up on that interval. If f '' 0 on an interval, then f is concave down on that interval. If f '' changes sign (from positive to negative, or from negative to positive) at some point x = c, then there is an Inflection Point located at x = c on the graph. The above image shows an Inflection Point.

Equations Inequalities Scientific Calculator Scientific Notation Arithmetics Complex Numbers Polar/Cartesian Simultaneous Equations System of Inequalities Polynomials Rationales Functions Arithmetic & Comp. Coordinate Geometry Plane Geometry Solid ... Find functions extreme and saddle points step-by-step. calculus-function-extreme-points ...f is concave up. b) If, at every point a in I, the graph of y f x always lies below the tangent line at a, we say that-f is concave down. (See figure 3.1). Proposition 3.4 a) If f is always positive in the interval I, then f is concave up in that interval. b) If f is always negative in the interval I, then f is concave down in that interval.This calculator will allow you to solve trig equations, showing all the steps of the way. All you need to do is to provide a valid trigonometric equation, with an unknown (x). It could be something simple as 'sin (x) = 1/2', or something more complex like 'sin^2 (x) = cos (x) + tan (x)'. Once you are done typing your equation, just go ahead and ...(5 points) Please answer the following questions about the function 3.22 f(x) = 22 - 25 (c) Calculate the second derivative off Find where fis concave up.concave down and has infection ponts "() Union of the intervals where f(x) is concave up Union of the intervals where f(x) is concave down infection points (d) The function is ? 2 because for an in the man of and therefore its graph is ...The turning point at ( 0, 0) is known as a point of inflection. This is characterized by the concavity changing from concave down to concave up (as in function ℎ) or concave up to concave down. Now that we have the definitions, let us look at how we would determine the nature of a critical point and therefore its concavity.Show Point of Inflection. Show Concave Up Interval. Show Concave Down Interval. 2) f(x) = 15x5 − 16x + 5. Show Point of Inflection. Show Concave Up Interval. Show Concave Down Interval. 3) f(x) = −3x + 2. Show Point of Inflection.Concave up on (√3, ∞) since f′′ (x) is positive. The graph is concave down when the second derivative is negative and concave up when the second derivative is positive. Concave down on ( - ∞, - √3) since f′′ (x) is negative. Concave up on ( - √3, 0) since f′′ (x) is positive.

Now that we know the second derivative, we can calculate the points of inflection to determine the intervals for concavity: f ''(x) = 0 = 6 −2x. 2x = 6. x = 3. We only have one inflection point, so we just need to determine if the function is concave up or down on either side of the function: f ''(2) = 6 −2(2)First, I would find the vertexes. Then, the inflection point. The vertexes indicate where the slope of your function change, while the inflection points determine when a function changes from concave to convex (and vice-versa). In order to find the vertexes (also named "points of maximum and minimum"), we must equal the first derivative of the …Here's the best way to solve it. 1. You are given a function f (x) whose domain is all real numbers. Describe in a short paragraph how you could sketch the graph without a calculator. Include how to find intervals where f is increasing or decreasing, how to find intervals where f is concave up or down, and how to find local extrema and points ...There is an inflection point at x=-1.75 and the function is concave down (nn) on the interval (-oo,-1.75), and it is concave up (uu) on the interval (-1.75,oo). Concavity and inflection points of a function can be determined by looking at the second derivative. If the second derivative is 0, it is an inflection point (IE where the graph changes concavity). If the second derivative is positive ...This can be split into two equations equalling 0: x = 0. This potential critical point is discarded since y' doesn't exist at x = 0. 2lnx +1 = 0. lnx = − 1 2. x = e−1/2 = 1 √e. This is the only critical value: x = 1 √e. Finding concavity and points of inflection: Concavity, convexity, and points of inflection are all dictated by a ...

Second Derivative and Concavity. Graphically, a function is concave up if its graph is curved with the opening upward (Figure \(\PageIndex{1a}\)). Similarly, a function is concave down if its graph opens downward (Figure \(\PageIndex{1b}\)).. Figure \(\PageIndex{1}\) This figure shows the concavity of a function at several points.A Concave function is also called a Concave downward graph. Intuitively, the Concavity of the function means the direction in which the function opens, concavity describes the state or the quality of a Concave function. For example, if the function opens upwards it is called concave up and if it opens downwards it is called concave down.An inflection point is defined as a point on the curve in which the concavity changes. (i.e) sign of the curvature changes. We know that if f ” > 0, then the function is concave up and if f ” < 0, then the function is concave down. If the function changes from positive to negative, or from negative to positive, at a specific point x = c ...Calculus. Find the Concavity f (x)=x^4-4x^3+2. f(x) = x4 - 4x3 + 2. Find the x values where the second derivative is equal to 0. Tap for more steps... x = 0, 2. The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

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Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history ...Increasing, concave. Correct answer: Decreasing, convex. Explanation: First, let's find out if the graph is increasing or decreasing. For that, we need the first derivative. To find the first derivative, we can use the power rule. We lower the exponent on all the variables by one and multiply by the original variable.Free derivative calculator - first order differentiation solver step-by-stepWith just a few clicks, users can access a wide range of online calculators that can perform calculations in a variety of fields, including finance, physics, chemistry, and engineering. These calculators are often designed with user-friendly interfaces that are easy to use and provide clear and concise results. Concave Up Or Down Calculator.1) Determine the | Chegg.com. Consider the following graph. 1) Determine the intervals on which the function is concave upward and concave downward. 2) Determine the x-coordinates of any inflection point (s) in the graph. Concave up: (-1,3); Concave down: (-0, -6) point (s): X=-1, x=3 (-6, -1) (3, 0); x-value (s) of inflection Concave up: (-6 ...5.4 Concavity and inflection points. We know that the sign of the derivative tells us whether a function is increasing or decreasing; for example, when f′(x) > 0 f ′ ( x) > 0 , f(x) f ( x) is increasing. The sign of the second derivative f′′(x) f ″ ( x) tells us whether f′ f ′ is increasing or decreasing; we have seen that if f ...

For a quadratic function f (x) = ax2 +bx + c, if a > 0, then f is concave upward everywhere, if a < 0, then f is concave downward everywhere. Wataru · 6 · Sep 21 2014.Determine the values of the leading coefficient a a for which the graph of function f (x) = ax2 + bx + c f ( x) = a x 2 + b x + c is concave up or down. Solution to Example 3. We first …Find step-by-step Biology solutions and your answer to the following textbook question: Determine where each function is increasing, decreasing, concave up, and concave down. With the help of a graphing calculator, sketch the graph of each function and label the intervals where it is increasing, decreasing, concave up, and concave down. Make sure that your graphs and your calculations agree ...Given a parabola \(y=ax^2+bx+c\), depending on the sign of \(a\), the \(x^2\) coefficient, it will either be concave-up or concave-down: \(a>0\): the parabola will be concave-up \(a<0\): the parabola will be concave-down; We illustrate each of these two cases here: ... To find the vertex we calculate its \(x\)-coordinate, \(h\), with the ...Hence the function f f f is concave-up for x > 1 x>1 x > 1 and concave-down for x < 1 x<1 x < 1. x = 1 x=1 x = 1 is point of inflection of the function f f f. These results can be seen from the graph of the function f f f in Figure 2 2 2. Figure 2. Concave up and down. \small\text{Figure $2$. Concave up and down.} Figure 2. Concave up and down.(5 points) Please answer the following questions about the function 3.22 f(x) = 22 - 25 (c) Calculate the second derivative off Find where fis concave up.concave down and has infection ponts "() Union of the intervals where f(x) is concave up Union of the intervals where f(x) is concave down infection points (d) The function is ? 2 because for an in the man of and therefore its graph is ...Example 5.4.1. Describe the concavity of f(x) = x3 − x. Solution. The first dervative is f ′ (x) = 3x2 − 1 and the second is f ″ (x) = 6x. Since f ″ (0) = 0, there is potentially an inflection point at zero. Since f ″ (x) > 0 when x > 0 and f ″ (x) < 0 when x < 0 the concavity does change from down to up at zero, and the curve is ...Explore math with our beautiful, free online graphing calculator. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more. Derivative Calculator. Save Copy. Log InorSign Up. f x = sin x. 1. f dx x = d dx f x. 2. f dx 2 x = d dx f dx ...Details. To visualize the idea of concavity using the first derivative, consider the tangent line at a point. Recall that the slope of the tangent line is precisely the derivative. As you move along an interval, if the slope of the line is increasing, then is increasing and so the function is concave up. Similarly, if the slope of the line is ...Polynomial graphing calculator. This calculator graphs polynomial functions. All polynomial characteristics, including polynomial roots (x-intercepts), sign, local maxima and minima, growing and decreasing intervals, points of inflection, and concave up-and-down intervals, can be calculated and graphed.To calculate how much you can afford, you need your gross monthly income, monthly debts, down payment amount, your home state, credit rating and loan type. By clicking "TRY IT", I ... Whether it's to pass that big test, qualify for that big promotion or even master that cooking technique; people who rely on dummies, rely on it to learn the critical skills and relevant information necessary for success. You can locate a function's concavity (where a function is concave up or down) and inflection points (where the concavity ...

2.6: Second Derivative and Concavity Second Derivative and Concavity. Graphically, a function is concave up if its graph is curved with the opening upward (Figure 1a). Similarly, a function is concave down if its graph opens downward (Figure 1b).. Figure 1. This figure shows the concavity of a function at several points.

On top of this up and down calculator, OddsMonkey also houses a number of just as beneficial alternatives, each of which offer similar ease of use. If you prefer multi selection bets which aren’t on the same event like with the up and down bets, then you could maybe check out both the double bet calculator as well as the treble bet calculator ...Answer : The first derivative of the given function is 3x² - 12x + 12. The second derivative of the given function is 6x - 12 which is negative up to x=2 and positive after that. So concave downward up to x = 2 and concave upward from x = 2. Point of inflexion of the given function is at x = 2.42. A function f: R → R is convex (or "concave up") provided that for all x, y ∈ R and t ∈ [0, 1] , f(tx + (1 − t)y) ≤ tf(x) + (1 − t)f(y). Equivalently, a line segment between two points on the graph lies above the graph, the region above the graph is convex, etc. I want to know why the word "convex" goes with the inequality in ...The second derivative test described above is formally stated below. The Second Derivative Test. Suppose f is a twice differentiable function and c is in the domain of f.. If f'(c) = 0 and f"(c) < 0, then f is concave down and has a local maximum at x = c.; If f'(c) = 0 and f"(c) > 0, then f is concave up and has a local minimum at x = c.; The Local Extrema of f(x) = x 3 - 2x - 2cos xAre you in need of a reliable calculator software but don’t want to spend a fortune on it? Look no further. In this article, we will guide you through the process of finding and do...A series of free Calculus Videos and solutions. Concavity Practice Problem 1. Problem: Determine where the given function is increasing and decreasing. Find where its graph is concave up and concave down. Find the relative extrema and inflection points and sketch the graph of the function. f (x)=x^5-5x Concavity Practice Problem 2.Calculus. Calculus questions and answers. Consider the following function. f (x) = (3 − x)e−x (a) Find the intervals of increase or decrease. (Enter your answers using interval notation.) increasing decreasing (b) Find the intervals of concavity. (Enter your answers using interval notation. If an answer does not exist, enter.Explanation: For the following exercises, determine a. intervals where f is increasing or decreasing, b. local minima and maxima off, c. intervals where f is concave up and concave down, and d. the inflection points of f. Sketch the curve, then use a calculator to compare your answer. If you cannot determine the exact answer analytically, use a ...Find step-by-step Biology solutions and your answer to the following textbook question: Determine where each function is increasing, decreasing, concave up, and concave down. With the help of a graphing calculator, sketch the graph of each function and label the intervals where it is increasing, decreasing, concave up, and concave down. Make sure that your graphs and your calculations agree ...Find function concavity intervlas step-by-step. function-concavity-calculator. he. פוסטים קשורים בבלוג של Symbolab. Functions. A function basically relates an input to an output, …

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of the graph being concave down, that is, shaped like a parabola open downward. At the points where the second derivative is zero, we do not learn anything about the shape of the graph: it may be concave up or concave down, or it may be changing from concave up to concave down or changing from concave down to concave up. So, to summarize ...Calculate parabola foci, vertices, axis and directrix step-by-step. parabola-equation-calculator. en. Related Symbolab blog posts. Practice, practice, practice. Math can be an intimidating subject. Each new topic we learn has symbols and problems we have never seen. The unknowing...Here’s the best way to solve it. 1. You are given a function f (x) whose domain is all real numbers. Describe in a short paragraph how you could sketch the graph without a calculator. Include how to find intervals where f is increasing or decreasing, how to find intervals where f is concave up or down, and how to find local extrema and points ...Write your solution to each part in the space provided for that part. 6. Consider the curve given by the equation 6xy y. = 2 + . dy y. (a) Show that 2 . dx = y2 − 2x. (b) Find the coordinates of a point on the curve at which the line tangent to the curve is horizontal, or explain why no such point exists.Homework Statement f(x)=(2x)/((x^2)-25) find concave up and down Homework Equations The Attempt at a Solution I found the second derivative to b -4x((-2x^2)-24)-----((x^2)-25)^2 i found the only inflection point was x=0 (which was correct) I plugged in values on both the right and left side of 0 and determined that f(x) was concave down on all values smaller than 0 with the exception of -5 ...Note that at stationary points of the expression, the curve is neither concave up nor concave down. In this case, 0 is a member of neither of the regions: In[5]:= Out[5]= To test that 0 is the only point where the second derivative is 0, use Resolve: In[6]:= Out[6]=Concave Down. A graph or part of a graph which looks like an upside-down bowl or part of an upside-down bowl. See also. Concave up, concave.Answer link. First find the derivative: f' (x)=3x^2+6x+5. Next find the second derivative: f'' (x)=6x+6=6 (x+1). The second derivative changes sign from negative to positive as x increases through the value x=1. Therefore the graph of f is concave down when x<1, concave up when x>1, and has an inflection point when x=1.$\begingroup$ you look at the first derivative for the quasi properties it could tell you if its monotone F'(x)>=0 or F'(x)>0 , F'(x)>=0or and F injective, which is more that sufficient for all six (strict, semi-strict, standard quasi convexity and the other three for quasi concavity) quasi's if F'(x)>0 its also strictly pseudo linear and thus strictly pseudo linear, which are just those ... ….

Find Concave Up And Down Calculator . Computerbasedmath one simple and interesting idea is that when we translate up and down the graph ...AP Calculus. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday TicketConcave Up Down Calculator. Concave Up Down Calculator - Web if f(x) > 0 for all x on an interval, f'(x) is increasing, and f(x) is concave up over the interval. Web concavity relates to the rate of change of a function's derivative. Our results show that the curve of f ( x) is concaving downward at the interval, ( − 2 3, 2 3).Find the second derivative for each of the following functions: ... The second derivative tells whether the curve is concave up or concave down at that point.A function is concave up for the intervals where d 2 f(x) /dx 2 > 0 and concave down for the intervals where d 2 f(x) /dx 2 < 0. Intervals where f(x) is concave up: −12x − 6 > 0. −12x > 6. ⇒ x < −1/2. Intervals where f(x) is concave down: −12x − 6 < 0. −12x < 6. ⇒ x > −1/2f (x) = x³ is increasing on (-∞,∞). A function f (x) increases on an interval I if f (b) ≥ f (a) for all b > a, where a,b in I. If f (b) > f (a) for all b>a, the function is said to be strictly increasing. x³ is not strictly increasing, but it does meet the criteria for an increasing function throughout it's domain = ℝ.Set this derivative equal to zero. Stationary points are the locations where the gradient is equal to zero. 0 = 2𝑥 – 2. Step 3. Solve for 𝑥. We add two to both sides to get 2 = 2𝑥. Dividing both sides by 2 we get 𝑥 = 1. Step 4. Substitute the 𝑥 coordinate back into the function to find the y coordinate.What is a Convex Polygon. A convex polygon is a polygon that has all its interior angles less than 180°. All the diagonals of a convex polygon lie inside the closed figure. A convex polygon can be both regular and irregular. Regular convex polygons have all sides of the same length and all interior angles of the same measure (less than 180°).To find the critical points of a two variable function, find the partial derivatives of the function with respect to x and y. Then, set the partial derivatives equal to zero and solve the system of equations to find the critical points. Use the second partial derivative test in order to classify these points as maxima, minima or saddle points. Find concave up and down calculator, Find the local maximum value(s). (Enter your answers as a comma-separated list.) (c) Find the inflection points. smaller x-value (x, y) = larger x-value (x, y) = Find the interval(s) where the function is concave up. (Enter your answer using interval notation.) Find the interval(s) where the function is concave down., f (x)=x^3+4.5x^2−12x+3. a) Determine the intervals on which f is concave up and concave down. f is concave up on: f is concave down on: b) Based on your answer to part (a), determine the inflection points of f. Each point should be entered as an ordered pair (that is, in the form (x,y)). =. c) Find the critical numbers of f and use the Second ..., To determine whether a function is concave up or concave down using the second derivative, you can follow these steps: Find the second derivative of the function. This involves taking the derivative of the first derivative of the function. The second derivative is often denoted as f''(x) or d²y/dx². Identify the critical points of the function., Equations Inequalities Scientific Calculator Scientific Notation Arithmetics Complex Numbers Polar/Cartesian Simultaneous Equations System of Inequalities Polynomials Rationales Functions Arithmetic & Comp. Coordinate Geometry Plane Geometry Solid ... Find functions extreme and saddle points step-by-step. calculus-function-extreme-points ..., Find the Concavity y=xe^ (-4x) y = xe - 4x. Write y = xe - 4x as a function. f(x) = xe - 4x. Find the x values where the second derivative is equal to 0. Tap for more steps... x = 1 2. The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined., Zeros Calculator: Your Tool to Find Function Zeros Easily; Jacobian Calculator: Your Gateway to Matrix Transformations; Fourier Series Calculator: The Ultimate Guide & Tool ... The primary trait of an inflection point is the shift from concave up to concave down or the reverse. Not Necessarily a Stationary Point: While some inflection points ..., Calculate parabola foci, vertices, axis and directrix step-by-step. parabola-equation-calculator. en. Related Symbolab blog posts. Practice, practice, practice. Math can be an intimidating subject. Each new topic we learn has symbols and problems we have never seen. The unknowing..., Calculate the second derivative. Substitute the value of x. If f " (x) > 0, the graph is concave upward at that value of x. If f " (x) = 0, the graph may have a point of inflection at that value of x. To check, consider the value of f " (x) at values of x to either side of the point of interest. If f " (x) < 0, the graph is concave downward at ..., Explore math with our beautiful, free online graphing calculator. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more. Untitled Graph. Save Copy. Log InorSign Up. x − y x + y xy ≥ 0. 1. x 1 y 1 y 2 − 9. 9. − 9. − 7. 7 ..., The second derivative is f'' (x) = 30x + 4 (using Power Rule) And 30x + 4 is negative up to x = −4/30 = −2/15, and positive from there onwards. So: f (x) is concave downward up to x = −2/15. f (x) is concave upward from x = …, Step 1: Finding the second derivative. To find the inflection points of f , we need to use f ″ : f ′ ( x) = 5 x 4 + 20 3 x 3 f ″ ( x) = 20 x 3 + 20 x 2 = 20 x 2 ( x + 1) Step 2: Finding all candidates. Similar to critical points, these are points where f ″ ( x) = 0 or where f ″ ( x) is undefined. f ″ is zero at x = 0 and x = − 1 ... , 245) The economy is picking up speed. Here f f is a measure of the economy, such as GDP. Answer: For the following exercises, consider a third-degree polynomial f(x), f ( x), which has the properties f′ (1)=0,f′ (3)=0. Determine whether the following statements are true or false. Justify your answer., Free online graphing calculator - graph functions, conics, and inequalities interactively, The second derivative of a function may also be used to determine the general shape of its graph on selected intervals. A function is said to be concave upward on an interval if f″(x) > 0 at each point in the interval and concave downward on an interval if f″(x) < 0 at each point in the interval. If a function changes from concave upward to concave downward or vice versa around a point, it ..., The first derivative is f'(x)=3x^2-6x and the second derivative is f''(x)=6x-6=6(x-1). The second derivative is negative when x<1, positive when x>1, and zero when x=1 (and of course changes sign as x increases "through" x=1). That means the graph of f is concave down when x<1, concave up when x>1, and has an inflection point at x=1., Find the second derivative for each of the following functions: ... The second derivative tells whether the curve is concave up or concave down at that point., We can use the second derivative of a function to determine regions where a function is concave up vs. concave down. First Derivative Information ... is negative, so we can conclude that the function is increasing and concave down on this interval. We can also calculate that [latex]f(0)=0[/latex], giving us a base point for the graph. Using ..., Positive Positive Increasing Concave up Positive Negative Increasing Concave down Negative Positive Decreasing Concave up Negative Negative Decreasing Concave down Table 4.6What Derivatives Tell Us about Graphs Figure 4.37 Consider a twice-differentiable function f over an open intervalI.Iff′(x)>0for allx∈I, the function is increasing overI., Type the function below after the f(x) = . Then simply click the red line and where it intersects to find the point of concavity. *****DISCLAIMER***** This graph won't show the points of concavity if the point doesn't exist within the original function or in the first two derivatives., The interval on the left of the inflection point is ???. On this interval f is (concave up or down) The interval on the right of the inflection point is ???. On this interval, f is (concave up or down.) I'm struggling calculating the second derivative and isolating for x to find the inflection points, can someone walk me through this problem ..., Explore math with our beautiful, free online graphing calculator. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more., Find the values where the second derivative is equal to . Tap for more steps... Step 1.1. Find the second derivative. Tap for more steps... Step 1.1.1. ... The graph is concave down on the interval because is negative. Concave down on since is negative. Concave down on since is negative., Find Concave Up And Down Calculator . Computerbasedmath one simple and interesting idea is that when we translate up and down the graph ..., Likewise, when a curve opens down, like the parabola \(y = -x^2\) or the opposite of the exponential function \(y = -e^{x}\text{,}\) we say that the function is concave down. Concavity is linked to both the first and second derivatives of the function. In Figure \(\PageIndex{7}\), we see two functions and a sequence of tangent lines to each., (c) Find the time intervals where the graph of P (t) is concave up and concave down. (d) When is the population increasing the fastest? (Hint: we want to find when d t d P reaches its maximum.) (e) Calculate lim t → ∞ P (t) and interpret the result. (f) Sketch a graph of P (t). (Remember that negative times don't make sense!), Free Functions Concavity Calculator - find function concavity intervlas step-by-step, So, the concave up and down calculator finds when the tangent line goes up or down, then we can find inflection point by using these values. Hence, the graph of derivative y = f' (x) increased when the function y = f(x) is concave upward as well as when the derivative y = f' (x) decreased the function is concave downward and the graph ..., Key Concepts. Concavity describes the shape of the curve. If the average rates are increasing on an interval then the function is concave up and if the average rates are decreasing on an interval then the function is concave down on the interval. A function has an inflection point when it switches from concave down to concave up or visa versa., Calculus. Find the Concavity f (x)=x^3-12x+3. f (x) = x3 − 12x + 3 f ( x) = x 3 - 12 x + 3. Find the x x values where the second derivative is equal to 0 0. Tap for more steps... x = 0 x = 0. The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the ..., The interval of increasing is x in (-oo, -1) uu 3, +oo). The local min. is (3, -22) and the local max. is (-1, 10). Concave up when x in (1, +oo) and concave down when x in (-oo, 1) The function is f(x)=x^3-3x^2-9x+5 This function is a polynomial function ; it is continous over RR Stat bu calculating the first derivative f'(x)=3x^2-6x-9=3(x^2-2x-3)=3(x-3)(x+1) To find the critical points ; let ..., Answers and explanations. For f ( x) = -2 x3 + 6 x2 - 10 x + 5, f is concave up from negative infinity to the inflection point at (1, -1), then concave down from there to infinity. To solve this problem, start by finding the second derivative. Now set it equal to 0 and solve. Check for x values where the second derivative is undefined., Recall that d/dx(tan^-1(x)) = 1/(1 + x^2) Thus f'(x) = 1/(1 + x^2) Concavity is determined by the second derivative. f''(x) = (0(1 + x^2) - 2x)/(1 + x^2)^2 f''(x) =- (2x)/(1 + x^2)^2 This will have possible inflection points when f''(x) = 0. 0 = 2x 0= x As you can see the sign of the second derivative changes at x= 0 so the intervals of concavity are as follows: f''(x) < 0--concave down: (0 ..., Find step-by-step Biology solutions and your answer to the following textbook question: Determine where each function is increasing, decreasing, concave up, and concave down. With the help of a graphing calculator, sketch the graph of each function and label the intervals where it is increasing, decreasing, concave up, and concave down. Make sure that your graphs and your calculations agree ...