Find the limit. limx→∞ arccos (1 + x2/1 + 2x2)
> The table shows how the average age of first marriage of Japanese women varied in the last half of the 20th century. (a). Use a graphing calculator or computer to model these data with a fourth-degree polynomial. (b). Use part (a) to find a model for A
> Show, using implicit differentiation, that any tangent line at a point P to a circle with center O is perpendicular to the radius OP.
> Find an equation of the tangent line to the curve at the given point. y = ln (x2 - 3x + 1), (3, 0)
> The number of yeast cells in a laboratory culture increases rapidly initially but levels off eventually. The population is modeled by the function where is measured in hours. At time t = 0 the population is 20 cells and is increasing at a rate of 12 cell
> Differentiate f and find the domain of f. f (x) = x/1 – ln (x – 1)
> Find y' and y". y = x2 ln (2x)
> Differentiate the function. y = log2 (e-x cos πx)
> Differentiate the function. f (x) = x ln x - x
> Differentiate the function. y = 2x log10√x
> The mass of the part of a metal rod that lies between its left end and a point meters to the right is 3x2 kg. Find the linear density (see Example 2) when is (a) 1 m, (b) 2 m, and (c) 3 m. Where is the density the highest? The lowest?
> A spherical balloon is being inflated. Find the rate of increase of the surface area (S = π4r2) with respect to the radius when is (a) 1 ft, (b) 2 ft, and (c) 3 ft. What conclusion can you make?
> A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 60 cm/s. Find the rate at which the area within the circle is increasing after (a) 1 s, (b) 3 s, and (c) 5 s. What can you conclude?
> (a). Use implicit differentiation to find y' if x2 + xy + y2 + 1 = 0. (b). Plot the curve in part (a). What do you see? Prove that what you see is correct. (c). In view of part (b), what can you say about the expression for y' that you found in part (a)?
> Differentiate the function. g (x) = ln (x √x2 – 1)
> Differentiate the function. h (x) = ln (x + √x2 – 1)
> Differentiate the function. F (t) = ln (2t + 1)3/ (3t – 1)4
> Differentiate the function. f (t) = x 1 + ln t/1 – ln t
> Differentiate the function. f (x) = sin x ln (5x)
> Differentiate the function. f (x) = ln 5√x
> Differentiate the function. f (x) = 5√ln x
> Use logarithmic differentiation to find the derivative of the function. y = (2x + 1)5(x4 – 3)6
> Let f (x) = cx + ln (cos x). For what value of c is f'(π/4) = 6?
> If f (x) = sin x + ln x, find f'(x). Check that your answer is reasonable by comparing the graphs of f and f'.
> Estimate the value of f'(a) by zooming in on the graph off. Then differentiate f to find the exact value of f'(a) and compare with your estimate. f (x) = 3x2 - x3, a = 1
> Find an equation of the tangent line to the curve at the given point. y = ln (x3 – 7), (2, 0)
> Differentiate f and find the domain of f. f (x) = ln ln ln x
> Find y' and y". y = ln x/x2
> Differentiate the function. y = [ln (1 + ex)]2
> Differentiate the function. y = ln (e-x + xe-x)
> Differentiate the function. y = ln |2 – x = 5x2|
> Differentiate the function. F (y) = y ln (1 + ey)
> Prove that cos (sin-1 x) = √1 – x2.
> Find the exact value of each expression. cos (tan-1 2 + tan-13)
> Find the exact value of each expression. sin (2 tan-1 √2)
> (a). Evaluate limx→∞ x sin 1/x. (b). Evaluate limx→0 x sin 1/x. (c). Illustrate parts (a) and (b) by graphing y = x sin (1/x).
> Find the exact value of each expression. csc (arccsc3/5)
> Find the exact value of each expression. tan (sin-1 (2/3)
> A semicircle with diameter PQ sits on an isosceles triangle PQR to form a region shaped like a two-dimensional ice-cream cone, as shown in the figure. If A (θ) is the area of the semicircle and B (θ)is the area of the triangle,
> (a). The van der Waals equation for n moles of a gas is where P is the pressure V, is the volume, and T is the temperature of the gas. The constant R is the universal gas constant and a and b are positive constants that are characteristic of a particular
> Find the value of the number a such that the families of curves y = (x + c)-1 and y = a (x + k)1/3 are orthogonal trajectories.
> Show that the ellipse x2/a2+ y2/b2 = 1 and the hyperbola x2/A2 – y2/B2 = 1 are orthogonal trajectories if A2 < a2 and a2 – b2 = A2 + B2 (so the ellipse and hyperbola have the same foci).
> (a). Sketch the graph of the function f (x) = sin (sin-1 x). (b). Sketch the graph of the function g (x) = sin-1 (sin x), x ∈ R (c). Show that g'(x) = cos x/|cos x|. (d). Sketch the graph of h (x) = cos-1 (sin x), x ∈ R, and find its derivative.
> Use the formula from Exercise 41(a) to prove Exercise 41(a): (a). Suppose f is a one-to-one differentiable function and its inverse function f-1 is also differentiable. Use implicit differentiation to show that (f-1)'(x) = 1/f'(f-1(x)) provided that th
> (a). Show that f (x) = 2x + cos x is one-to-one. (b). What is the value of f-1(1)? (c). Use the formula from Exercise 41(a) to find (f-1)'(1). Exercise 41(a): (a). Suppose f is a one-to-one differentiable function and its inverse function f-1 is also d
> (a). Suppose f is a one-to-one differentiable function and its inverse function f-1 is also differentiable. Use implicit differentiation to show that (f-1)'(x) = 1/f'(f-1(x)) provided that the denominator is not 0. (b). If f (4) = 5 and f'(4) = 2/3, find
> If f and g are the functions whose graphs are shown, let u (x) = f (x) g (x) and v (x) = f (x) /g (x). (a). Find u'(1) (b). Find v'(5)
> Find the limit. limx→0+ tan-1 (ln x)
> Find the exact value of each expression. (a). tan-1 (tan3π/4) (b). cos (arccos ½)
> Find the limit. limx→∞+ arctan (ex)
> Find the limit. Limx→-1+ sin-1 x
> Find f'(x). Check that your answer is reasonable by comparing the graphs of f and f'. f (x) = arctan (x2 -x)
> Find f'(x). Check that your answer is reasonable by comparing the graphs of f and f'. f (x) = √1 - x2 arcsin x
> Find an equation of the tangent line to the curve y = 3 arccos (x/2) at the point (1, π).
> If g (x) = x sin (x/4) + √16 – x2, find g'(2).
> Find y' if tan-1 (xy) = 1 + x2y.
> The figure shows the graphs of four functions. One is the position function of a car, one is the velocity of the car, one is its acceleration, and one is its jerk. Identify each curve, and explain your choices. у. a b
> Find the derivative of the function. Find the domains of the function and its derivative. g (x) = c0s-1 (3 – 2x)
> Find the derivative of the function. Find the domains of the function and its derivative. f (x) = arcsin (ex)
> Find the exact value of each expression. (a). arctan 1 (b). sin-1 (1/√2)
> Find the derivative of the function. Simplify where possible. y = arccos (b + a cos x/a + b cos x), 0 < x < π, a > b > 0
> Find the derivative of the function. Simplify where possible. y = arctan √1-x/1+x
> Find the derivative of the function. Simplify where possible. y = x sin-1 x + √1 – x2
> Find the derivative of the function. Simplify where possible. y = cos-1 (sin-1 t)
> Find the derivative of the function. Simplify where possible. y = arctan (cos θ)
> Find the derivative of the function. Simplify where possible. y = tan-1 (x – √1 + x2)
> Find the derivative of the function. Simplify where possible. y = cos-1(e2x)
> The figure shows the graphs of three functions. One is the position function of a car, one is the velocity of the car, and one is its acceleration. Identify each curve, and explain your choices. y b
> Find the derivative of the function. Simplify where possible. f (x) = x ln (arctan x)
> Find the derivative of the function. Simplify where possible. G (x) = √1 – x2 arccos x
> Find the derivative of the function. Simplify where possible. F (θ) = arcsin √sin θ
> Find the exact value of each expression. (a). tan-1 (1/√3) (b). sec-1 (2)
> Find the derivative of the function. Simplify where possible. y = sin-1 (2x + 1)
> Find the derivative of the function. Simplify where possible. y = tan-1 (x2)
> Find the derivative of the function. Simplify where possible. y = (tan-1 x)2
> (a). Prove that sin-1 x = π/2. (b). Use part (a) to prove Formula 2. sin1x cos1x
> Prove Formula 2 by the same method as for Formula 1.
> Graph the given functions on the same screen. How are these graphs related? y = tan x, - 7/2 < x < m/2; y= tan='x; y = x
> The figure shows graphs of f, f', f'' and f'''. Identify each curve, and explain your choices. a b c d
> Graph the given functions on the same screen. How are these graphs related? y = sin x, -7/2 sIS /2; y= sin-'x; y = x
> Simplify the expression. cos (2 tan-1 x)
> Simplify the expression. sin (tan-1 x)
> Simplify the expression. tan (sin-1 x)
> Find the exact value of each expression. (a). sin-1 (√3/2) (b). cos-1 (-1)
> Find dy/dx by implicit differentiation. x2y2 + x sin y = 4
> Find dy/dx by implicit differentiation. y5 + x2y3 = 1+ yex2
> Find dy/dx by implicit differentiation. x4 (x + y) = y2 (3x – y)
> Find dy/dx by implicit differentiation. 2x3 + x2y – xy3 = 2
> Find dy/dx by implicit differentiation. x2 + xy – y2 = 4
> Two curves are orthogonal if their tangent lines are perpendicular at each point of intersection. Show that the given families of curves are orthogonal trajectories of each other, that is, every curve in one family is orthogonal to every curve in the oth
> Two curves are orthogonal if their tangent lines are perpendicular at each point of intersection. Show that the given families of curves are orthogonal trajectories of each other, that is, every curve in one family is orthogonal to every curve in the oth
> Two curves are orthogonal if their tangent lines are perpendicular at each point of intersection. Show that the given families of curves are orthogonal trajectories of each other, that is, every curve in one family is orthogonal to every curve in the oth
> Two curves are orthogonal if their tangent lines are perpendicular at each point of intersection. Show that the given families of curves are orthogonal trajectories of each other, that is, every curve in one family is orthogonal to every curve in the oth
> Find an equation of the tangent line to the curve at the given point. y = (1 + 2x)10, (0, 1)
> Show by implicit differentiation that the tangent to the ellipse x2/a2 + y2/b2 = 1 at the point (x0, y0) is x0x/a2 + y0y/b2 = 1
> Find dy/dx by implicit differentiation. 2√x + √y = 3
> Find y' and y". y = eax sin βx
> Find y' and y". y = cos2x
> Find y' and y". y = cos (x2)
> Find the derivative of the function. y = 23x2
> Zoom in toward the points (1, 0), (0, 1), and (-1, 0) on the graph of the function g (x) = (x2 – 1)2/3. What do you notice? Account for what you see in terms of the differentiability of g.
