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study help
mathematics
precalculus
Questions and Answers of
Precalculus
The limit represents f′(c) for a function f and a number c. Find f and c. 2√x-6 lim x 9 x 9
Find d2y/dx2 implicitly in terms of x and y.x2 y − 2 = 5x + y
Find the derivative of the trigonometric function.y = sin(3x2 + cos x)
(a) Find an equation of the tangent line to the graph of the function at the given point,(b) Use a graphing utility to graph the function and its tangent line at the point, and(c) Use the tangent
A function f is symmetric with respect to the origin. Is f′ necessarily symmetric with respect to the origin? Explain.
Find the derivative of the trigonometric function.y = cos(5x + csc x)
Find the slope of the graph of the function at the given point. Use the derivative feature of a graphing utility to confirm your results.
Find d2y/dx2 implicitly in terms of x and y.7xy + sin x = 2
Use a computer algebra system to find the derivative of the function. f(x) = COS X 1 - sin x
Find the derivative of the trigonometric function.y = sin√cot 3 x
The tangent line to the graph of y = h(x) at the point (−1, 4) passes through the point (3, 6). Find h(−1) and h′(−1).
Find d2y/dx2 implicitly in terms of x and y.3xy − 4 cos x = −6
Find the derivative of the trigonometric function.y = cos√sin(tan x)
(a) Find an equation of the tangent line to the graph of the function at the given point,(b) Use a graphing utility to graph the function and its tangent line at the point, and f(x) = tan² x, (-¹) 4
Use a computer algebra system to find the derivative of the function. Then use the utility to graph the function and its derivative on the same set of coordinate axes. Describe the behavior of the
Find the slope of the graph of the function at the given point. Use the derivative feature of a graphing utility to confirm your results.y = √x2 + 8x, (1, 3)
Find the slope of the graph of the function at the given point. Use the derivative feature of a graphing utility to confirm your results.f(x) = 5(x3 − 2)−1 , (−2, −1 /2)
Consider the equation x4 = 4(4x2 − y2).(a) Use a graphing utility to graph the equation.(b) Find and graph the four tangent lines to the curve for y = 3.(c) Find the exact coordinates of the point
Find the second derivative of the function. f(x) = 1 11x - 6
(a) Find an equation of the tangent line to the graph of the function at the given point,(b) Use a graphing utility to graph the function and its tangent line at the point, andf(x) = √2x2 − 7,
(a) Find an equation of the tangent line to the graph of the function at the given point,(b) Use a graphing utility to graph the function and its tangent line at the point, andy = (4x3 + 3)2, (−1,
The frequency F of a fire truck siren heard by a stationary observer iswhere ±v represents the velocity of the accelerating fire truck in meters per second (see figure). Find the rate of change of F
(a) Find an equation of the tangent line to the graph of the function at the given point,(b) Use a graphing utility to graph the function and its tangent line at the point, andf(x) = sin 8x, (π, 0)
The normal daily maximum temperatures T (in degrees Fahrenheit) for Chicago, Illinois, are shown in the table. (a) Use a graphing utility to plot the data and find a model for the data of the
Determine the point(s) in the interval (0, 2) at which the graph of f(x) = 2 cos x + sin 2x has a horizontal tangent.
Find the second derivative of the function.f(x) = 5(2 − 7x)4
Prove each differentiation rule.(a) d/dx [sec x] = sec x tan x(b) d/dx [csc x] = −csc x cot x(c) d/dx [cot x] = −csc2 x
Find the second derivative of the function.f(x) = sin x2
Evaluate the second derivative of the function at the given point. Use a computer algebra system to verify your result.f(x) = cos x2, (0, 1)
The linear and quadratic approximations of a function f at x = a are P1(x) = f′(a)(x − a) + f (a) and P2(x) = 1/2 f ″(a)(x − a)2 + f′(a)(x − a) + f (a).(a) Find the specified linear and
Find the second derivative of the function.f(x) = x2 + 7x − 4
The relationship between f and g is given. Describe the relationship between f′ and g′.(a) g(x) = f(3x)(b) g(x) = f(x2)
Find the given higher-order derivative.f ″(x) = −sin x, f (8) (x)
Consider the function f(x) = sin x, where is a constant.(a) Find the first-, second-, third-, and fourth-order derivatives of the function.(b) Verify that the function and its second derivative
Determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false.The slope of the function f(x) = sin ax at the origin is a.
Determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false.If y is a differentiable function of u, and u is a differentiable function of
Determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false.If f′(c) and g′(c) are zero and h(x) = f(x)g(x), then h′(c) = 0.
Determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false.The second derivative represents the rate of change of the first derivative.
Graph the lower half of the circle defined by the equation x2 + 2x = 4 + 4y - y2.
Gives a formula for a function y = ƒ(x). In each case, find ƒ -1(x) and identify the domain and range of ƒ -1. As a check, show that ƒ(ƒ -1(x)) = ƒ -1(ƒ(x)) = x.and
Express the area and circumference of a circle as functions of the circle’s radius. Then express the area as a function of the circumference.
Sketch the given curves together in the appropriate coordinate plane and label each curve with its equation.y = 2x, y = 4x, y = 3-x, y = (1/5)x
Use graphing software to determine which of the given viewing windows displays the most appropriate graph of the specified function.ƒ(x) = x4 - 7x2 + 6xa. [-1, 1] by [-1, 1] b. [-2, 2] by [-5,
A point P in the first quadrant lies on the parabola y = x2. Express the coordinates of P as functions of the angle of inclination of the line joining P to the origin.
Sketch the given curves together in the appropriate coordinate plane and label each curve with its equation.y = 2-t and y = -2t
Shows the graph of a function y = ƒ(x). Copy the graph and draw in the line y = x. Then use symmetry with respect to the line y = x to add the graph of ƒ-1 to your sketch. (It is not necessary to
Use graphing software to determine which of the given viewing windows displays the most appropriate graph of the specified function.ƒ(x) = 5 + 12x - x3a. [-1, 1] by [-1, 1]b. [-5, 5] by [-10, 10]c.
Determine whether the graph of the function is symmetric about the y-axis, the origin, or neither.y = x1/5
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Use the laws of exponents to simplify the expression. 44.2 43.7
Sketch the given curves together in the appropriate coordinate plane and label each curve with its equation.y = ex and y = 1/ex
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Sketch the shifted exponential curve.y = 2x - 1 and y = 2-x - 1
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Shows the graph of a function y = ƒ(x). Copy the graph and draw in the line y = x. Then use symmetry with respect to the line y = x to add the graph of ƒ-1 to your sketch. (It is not necessary to
Sketch the shifted exponential curve.y = 1 - ex and y = 1 - e-x
Shows the graph of a function y = ƒ(x). Copy the graph and draw in the line y = x. Then use symmetry with respect to the line y = x to add the graph of ƒ-1 to your sketch. (It is not necessary to
Use the laws of exponents to simplify the expression.162 · 16-1.75
Graph the function What symmetry does the graph have? f(x) = V1 - x²,0 ≤ x ≤ 1.
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Gives a formula for a function y = ƒ(x) and shows the graphs of ƒ and ƒ -1. Find a formula for ƒ -1 in each case. - y 0 0 = x 'I + zx = (x)ƒ 1 y = f(x) y = f-¹(x) Xx
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Find the (a) Domain and (b) Range. y: 1-91
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Suppose that ƒ and g are both odd functions defined on the entire real line. Which of the following (where defined) are even? odd?a. ƒg b. ƒ3 c. ƒ(sin x) d. g(sec x) e. |g|
Find the domain and range for each of the function. g(t) = V1 + 3 t
Find the domain and range for each of the function. f(x) 1 2 + et
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Gives a formula for a function y = ƒ(x) and shows the graphs of ƒ and ƒ -1. Find a formula for ƒ -1 in each case. - 1 f(x) = (x + 1)², x ≥ −1 y 0 - 1 /y = f(x) 1 y = f-¹(x) X
Gives a formula for a function y = ƒ(x) and shows the graphs of ƒ and ƒ -1. Find a formula for ƒ -1 in each case. f(x) = x³ - 1 1 1 y -1 y = f(x) y = f-¹(x) → X
Find the (a) Domain and (b) Range.y = | x | - 2
Find the (a) Domain and (b) Range.y = 2e-x - 3
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Find the (a) Domain and (b) Range.y = 2sin (3x + π) - 1
Use graphs to find approximate solution.2x = 5
Find the (a) Domain and (b) Range. -X, y = {√ ₁² -4 ≤ x ≤0 0 ≤ x ≤ 4
Find an appropriate graphing software viewing window for the given function and use it to display its graph. The window should give a picture of the overall behavior of the function. There is more
Gives a formula for a function y = ƒ(x). In each case, find ƒ -1(x) and identify the domain and range of ƒ -1. As a check, show that ƒ(ƒ -1(x)) = ƒ -1(ƒ(x)) = x.ƒ(x) = x5
Gives a formula for a function y = ƒ(x). In each case, find ƒ -1(x) and identify the domain and range of ƒ -1. As a check, show that ƒ(ƒ -1(x)) = ƒ -1(ƒ(x)) = x. f(x) = x +
Find the (a) Domain and (b) Range.y = ln (x - 3) + 1
Use graphs to find approximate solution.3x - 0.5 = 0
Write a piecewise formula for the function. 0 1 2 ·X
Gives a formula for a function y = ƒ(x). In each case, find ƒ -1(x) and identify the domain and range of ƒ -1. As a check, show that ƒ(ƒ -1(x)) = ƒ -1(ƒ(x)) = x.ƒ(x) = x3
State whether each function is increasing, decreasing, or neither.a. Volume of a sphere as a function of its radiusb. Greatest integer functionc. Height above Earth’s sea level as a function of
The population of Knoxville is 500,000 and is increasing at the rate of 3.75% each year. Approximately when will the population reach 1 million?
Gives a formula for a function y = ƒ(x). In each case, find ƒ -1(x) and identify the domain and range of ƒ -1. As a check, show that ƒ(ƒ -1(x)) = ƒ -1(ƒ(x)) = x.ƒ(x) =
The half-life of phosphorus-32 is about 14 days. There are 6.6 grams present initially.a. Express the amount of phosphorus-32 remaining as a function of time t.b. When will there be 1 gram remaining?
Graph four periods of the function ƒ(x) = -tan 2x.
Finda. (ƒ ∘ g) (-1). b. (g ∘ ƒ) (2).c. (ƒ ∘ ƒ) (x). d. (g ∘ g) (x). f(x) 1 X' g(x) = 1 √x + 2
The median price of single-family homes in the United States increased quite consistently during the years 1976–2000. Then a housing “bubble” occurred for the years 2001–2010, in which prices
Determine how much time is required for an investment to double in value if interest is earned at the rate of 6.25% compounded annually.
A NASA Goddard Institute for Space Studies report gives the annual global mean land-ocean temperature index for the years 1880 to the present. The index number is the difference between the mean
The table shows the average weight for men of medium frame based on height as reported by the Metropolitan Life Insurance Company (1983).a. Make a scatterplot of the data.b. Find and plot a
Gives a formula for a function y = ƒ(x). In each case, find ƒ -1(x) and identify the domain and range of ƒ -1. As a check, show that ƒ(ƒ -1(x)) = ƒ -1(ƒ(x)) = x.ƒ(x) = x2
Use graphing software to graph the functions specified. Select a viewing window that reveals the key features of the function.Graph the function ƒ(x) = sin 2x + cos 3x.
Suppose that a colony of bacteria starts with 1 bacterium and doubles in number every half hour. How many bacteria will the colony contain at the end of 24 hr?
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