Differentiation Questions and Answers

A certain function f has inverse function f⁻¹(x) = x³ + 2x + 1. Use this to solve for x in the
equation 3f(x) - 1 = 5.
(Hint: First solve for what number f(x) must be, then use the inverse to find what number x must be.)
Calculus
Differentiation
A certain function f has inverse function f⁻¹(x) = x³ + 2x + 1. Use this to solve for x in the equation 3f(x) - 1 = 5. (Hint: First solve for what number f(x) must be, then use the inverse to find what number x must be.)
Find the derivative of f(x)=x³ using limits
Calculus
Differentiation
Find the derivative of f(x)=x³ using limits
Suppose f'(x) is continuous over an interval α ≤ x ≤ b, and a < c < d < b.
If f'(c) = 5, then (check all that apply)
f(x) is decreasing through x = c
f(c) = 5
f(c) exists
f does not have a minimum at x = c
f does not have a maximum at x = c
f(x) is increasing through x = c
If f'(d) = -5, then (check all that apply)
f(d) exists
f does not have a maximum at x = d
f does not have a minimum at x = d
f(d) = -5
f(x) is increasing through x = d
f(x) is decreasing through x = d
Based on this, we know that for some x between x = c and x = d:
f has a maximum
f has a minimum
f does not exist
f'(x) = 0
Calculus
Differentiation
Suppose f'(x) is continuous over an interval α ≤ x ≤ b, and a < c < d < b. If f'(c) = 5, then (check all that apply) f(x) is decreasing through x = c f(c) = 5 f(c) exists f does not have a minimum at x = c f does not have a maximum at x = c f(x) is increasing through x = c If f'(d) = -5, then (check all that apply) f(d) exists f does not have a maximum at x = d f does not have a minimum at x = d f(d) = -5 f(x) is increasing through x = d f(x) is decreasing through x = d Based on this, we know that for some x between x = c and x = d: f has a maximum f has a minimum f does not exist f'(x) = 0
Use the chain or general power rules to determine the derivative of the following function.
f(x)=(5-6x²+2x³)³
Calculus
Differentiation
Use the chain or general power rules to determine the derivative of the following function. f(x)=(5-6x²+2x³)³
Let a≠0 be a complex number, and define the αth branch of zª by f(z) := exp(aLogα(z)). Show that, for z € C \ Rα, we have ƒ'(z) = af(z)/z. This means d/dzzª= aza-1 where we pick the same branch on both sides of the identity.
Calculus
Differentiation
Let a≠0 be a complex number, and define the αth branch of zª by f(z) := exp(aLogα(z)). Show that, for z € C \ Rα, we have ƒ'(z) = af(z)/z. This means d/dzzª= aza-1 where we pick the same branch on both sides of the identity.
Find the derivative.
f(x) = sinh-¹(-9x)
f'(x) =
Calculus
Differentiation
Find the derivative. f(x) = sinh-¹(-9x) f'(x) =
Use differentials to estimate the amount of paint needed (in m³) to apply a coat of paint 0.04 cm thick to a hemispherical dome with diameter 56 m. (Round your answer to two decimal places.)
Calculus
Differentiation
Use differentials to estimate the amount of paint needed (in m³) to apply a coat of paint 0.04 cm thick to a hemispherical dome with diameter 56 m. (Round your answer to two decimal places.)
If x² + y² + z² = 9, dx/dt= 8, and dy/dt =5, find dz/dt when (x, y, z) = (2, 2, 1).
Calculus
Differentiation
If x² + y² + z² = 9, dx/dt= 8, and dy/dt =5, find dz/dt when (x, y, z) = (2, 2, 1).
Use substitution to determine whether the given x-value is a solution of the equation.
tan x =√3/3, x= -5π/6
Yes
No
Calculus
Differentiation
Use substitution to determine whether the given x-value is a solution of the equation. tan x =√3/3, x= -5π/6 Yes No
Find the derivative, r'(t), of the vector function.
r(t) = a + 5tb + t³c
Calculus
Differentiation
Find the derivative, r'(t), of the vector function. r(t) = a + 5tb + t³c
(a) Find the unit vectors that are parallel to the tangent line to the curve y = 8 sin(x) at the point (π/6 ,4).
smaller i-component
larger i-component
(b) Find the unit vectors that are perpendicular to the tangent line.
smaller i-component
larger i-component
Calculus
Differentiation
(a) Find the unit vectors that are parallel to the tangent line to the curve y = 8 sin(x) at the point (π/6 ,4). smaller i-component larger i-component (b) Find the unit vectors that are perpendicular to the tangent line. smaller i-component larger i-component
Find f'(x) and find the values(s) of x where f'(x) = 0.
f(x) = (2x - 45) (x² +168)
f'(x) =
x=
(Type an integer or a simplified fraction. Use a comma to separate answers as needed.)
Calculus
Differentiation
Find f'(x) and find the values(s) of x where f'(x) = 0. f(x) = (2x - 45) (x² +168) f'(x) = x= (Type an integer or a simplified fraction. Use a comma to separate answers as needed.)
An investment of $9,000 earns interest at an annual rate of 8.5% compounded continuously. Complete parts (A) and (B) below.
(A) Find the instantaneous rate of change of the amount in the account after 2 year(s).
$ (Round to two decimal places as needed).
(B) Find the instantaneous rate of change of the amount in the account at the time the amount is equal to $13,500.
(Round to two decimal places as needed).
$
Calculus
Differentiation
An investment of $9,000 earns interest at an annual rate of 8.5% compounded continuously. Complete parts (A) and (B) below. (A) Find the instantaneous rate of change of the amount in the account after 2 year(s). $ (Round to two decimal places as needed). (B) Find the instantaneous rate of change of the amount in the account at the time the amount is equal to $13,500. (Round to two decimal places as needed). $
Find (A) the derivative of F(x)S(x) without using the product rule, and (B) F'(x)S'(x). Note that the answer to part (B) is different from the answer to part (A)-
F(x) = x^4 + 1, S(x) = x^5
(A) The derivative of F(x)S(x) is.
(B) F'(x)S'(x) =
Calculus
Differentiation
Find (A) the derivative of F(x)S(x) without using the product rule, and (B) F'(x)S'(x). Note that the answer to part (B) is different from the answer to part (A)- F(x) = x^4 + 1, S(x) = x^5 (A) The derivative of F(x)S(x) is. (B) F'(x)S'(x) =
Find the equation of the line tangent to the graph of f at the indicated value of x.
f(x)= 8+ Inx; x = 1
Calculus
Differentiation
Find the equation of the line tangent to the graph of f at the indicated value of x. f(x)= 8+ Inx; x = 1
Creamy Bugs Yogurt has found that the cost, in dollars per pound, of the yogurt it produces, is C'(x) = -0.003x + 450, for x ≤ 300, where x is the number of pounds of yogurt produced. Find the total cost of producing 260 pounds of yogurt.
A. $116,898.60
B. $449.22
C. $449.61
D. $233,797.20
Calculus
Differentiation
Creamy Bugs Yogurt has found that the cost, in dollars per pound, of the yogurt it produces, is C'(x) = -0.003x + 450, for x ≤ 300, where x is the number of pounds of yogurt produced. Find the total cost of producing 260 pounds of yogurt. A. $116,898.60 B. $449.22 C. $449.61 D. $233,797.20
Use the chain rule to find dz/dt
z = xy^9 - x^2y, x = t^2 + 1, y = t^2 - 1
Calculus
Differentiation
Use the chain rule to find dz/dt z = xy^9 - x^2y, x = t^2 + 1, y = t^2 - 1
Find f(x+h) - f(x) / h for the function f(x) = 10x - 9
Calculus
Differentiation
Find f(x+h) - f(x) / h for the function f(x) = 10x - 9
Determine the angle between 0 and 2π that is coterminal to 1020°.
Calculus
Differentiation
Determine the angle between 0 and 2π that is coterminal to 1020°.
Let (u, v) be the inner product on R² generated by A = [4 1] [-2 1]
and let u = (0, -2), v = (4,2). Find (u, v).
(u, v) =
Current Attempt in Progress
Compute the standard inner product on M22 of the given matrices.
Calculus
Differentiation
Let (u, v) be the inner product on R² generated by A = [4 1] [-2 1] and let u = (0, -2), v = (4,2). Find (u, v). (u, v) = Current Attempt in Progress Compute the standard inner product on M22 of the given matrices.
Let f(x) = |x|-2 Evaluate the function at the given values. Then select the appropriate graph that represents this function.
a. f(-2) = Type your answer here
b.f(-1) = Type your answer here
c. f(0) = Type your answer here
d. f(1) = Type your answer here
e. f(2)= Type your answer here
f. The graph that represents this function is graph Write your response here.
Calculus
Differentiation
Let f(x) = |x|-2 Evaluate the function at the given values. Then select the appropriate graph that represents this function. a. f(-2) = Type your answer here b.f(-1) = Type your answer here c. f(0) = Type your answer here d. f(1) = Type your answer here e. f(2)= Type your answer here f. The graph that represents this function is graph Write your response here.
Consider the following.
3/x - 1/y =7
(a) Find y' by implicit differentiation.
y' =
(b) Solve the equation explicitly for y and differentiate to get y' in terms of x.
y' =
(c) Check that your solutions to parts (a) and (b) are consistent by substituting the expression for y into your solution for part (a).
y' =
Calculus
Differentiation
Consider the following. 3/x - 1/y =7 (a) Find y' by implicit differentiation. y' = (b) Solve the equation explicitly for y and differentiate to get y' in terms of x. y' = (c) Check that your solutions to parts (a) and (b) are consistent by substituting the expression for y into your solution for part (a). y' =
Find dy/dt for each pair of functions.
y=x²-7x, x = t² +3
Calculus
Differentiation
Find dy/dt for each pair of functions. y=x²-7x, x = t² +3
Find the derivative of the following function.
A = 690(1.702)^t
Calculus
Differentiation
Find the derivative of the following function. A = 690(1.702)^t
Find an exponential function of the form P(t)= Pon^1/T that models the situation, and then find the equivalent exponential model of the form P(t)=Poe. Doubling time of 4 yr, initial population of 500.
Find an exponential function of the form P(t) = Pon^1/T that models the situation.
The exponential function is P(t) = 500(2)^1/4
(Use integers or fractions for any numbers in the expression.)
Find the equivalent exponential model of the form P(t) = Poe^rt.
Calculus
Differentiation
Find an exponential function of the form P(t)= Pon^1/T that models the situation, and then find the equivalent exponential model of the form P(t)=Poe. Doubling time of 4 yr, initial population of 500. Find an exponential function of the form P(t) = Pon^1/T that models the situation. The exponential function is P(t) = 500(2)^1/4 (Use integers or fractions for any numbers in the expression.) Find the equivalent exponential model of the form P(t) = Poe^rt.
Differentiate the function.
f(x) = x²(x + 4)
f'(x) = 4x³ + 12x²
Calculus
Differentiation
Differentiate the function. f(x) = x²(x + 4) f'(x) = 4x³ + 12x²
Find dy/dx by implicit differentiation.
x² - 14xy + y² = 14
Calculus
Differentiation
Find dy/dx by implicit differentiation. x² - 14xy + y² = 14
Find the derivative of the function.
f(t)- 7t sin(ut)
Calculus
Differentiation
Find the derivative of the function. f(t)- 7t sin(ut)
Let f(u) = u³ and g(x)=u=6x^5 +5. Find (fog)'(1).
(fog)'(1) =
(Type an exact answer.)
Calculus
Differentiation
Let f(u) = u³ and g(x)=u=6x^5 +5. Find (fog)'(1). (fog)'(1) = (Type an exact answer.)
Find dy/dt for each pair of functions.
y=x²-2x, x= t² +4
dy/dt=
Calculus
Differentiation
Find dy/dt for each pair of functions. y=x²-2x, x= t² +4 dy/dt=
The demand for a new computer game can be modeled by p(x) = 41-8 In x, for 0 ≤x≤ 800, where p(x) is the price consumers will pay, in dollars, and x is the number of games sold, in thousands. Recall that total revenue is given by R(x)=x p(x). Complete parts (a) through (c) below.
Calculus
Differentiation
The demand for a new computer game can be modeled by p(x) = 41-8 In x, for 0 ≤x≤ 800, where p(x) is the price consumers will pay, in dollars, and x is the number of games sold, in thousands. Recall that total revenue is given by R(x)=x p(x). Complete parts (a) through (c) below.
Use the chain rule or general power rule to determine the derivative of the following
f(x)=(2x³-6x²)^ 3
2.) y=√6x² +8
Calculus
Differentiation
Use the chain rule or general power rule to determine the derivative of the following f(x)=(2x³-6x²)^ 3 2.) y=√6x² +8
For the polynomial below, -1 is a zero.
f(x)=x²³ - 5x² + 6
Express f(x) as a product of linear factors.
Calculus
Differentiation
For the polynomial below, -1 is a zero. f(x)=x²³ - 5x² + 6 Express f(x) as a product of linear factors.
Find all ercepts and y-intercepts of the graph of the function.
f(x) = 2x² +9x+10
If there is more than one answer, separate them with commas.
Click on "None" if applicable.
x-intercept(s): 0
y-intercept(s): 0
None
0/0
Xx
0/6
0,0....
S
0/6
?
Calculus
Differentiation
Find all ercepts and y-intercepts of the graph of the function. f(x) = 2x² +9x+10 If there is more than one answer, separate them with commas. Click on "None" if applicable. x-intercept(s): 0 y-intercept(s): 0 None 0/0 Xx 0/6 0,0.... S 0/6 ?
- 23x² + 48
x²6
Determine the intervals on which f is decreasing.
Consider f(x)
Of is decreasing on:
Of is decreasing nowhere.
Determine the intervals on which f is increasing.
Of is increasing on:
Of is increasing nowhere.
Determine the value and location of any local minimum of f. Enter the solution in (x, f(x)) form. If
multiple solutions exist, use a comma-separated list to enter the solutions.
of has a local minimum at:
Of has no local minimum.
Determine the value and location of any local maximum of f. Enter the solution in (x, f(x)) form. If
multiple solutions exist, use a comma-separated list to enter the solutions.
of has a local maximum at:
Of has no local maximum.
Calculus
Differentiation
- 23x² + 48 x²6 Determine the intervals on which f is decreasing. Consider f(x) Of is decreasing on: Of is decreasing nowhere. Determine the intervals on which f is increasing. Of is increasing on: Of is increasing nowhere. Determine the value and location of any local minimum of f. Enter the solution in (x, f(x)) form. If multiple solutions exist, use a comma-separated list to enter the solutions. of has a local minimum at: Of has no local minimum. Determine the value and location of any local maximum of f. Enter the solution in (x, f(x)) form. If multiple solutions exist, use a comma-separated list to enter the solutions. of has a local maximum at: Of has no local maximum.
Consider h(y) = -7 cos y +7√3 siny on [0, 2π].
Determine the intervals on which h is decreasing.
Oh is decreasing on:
Oh is decreasing nowhere.
Determine the intervals on which h is increasing.
Oh is increasing on:
h is increasing nowhere.
Determine the value and location of any local minimum of f. Enter the solution in (y, h(y)) form. If
multiple solutions exist, use a comma-separated list to enter the solutions.
Oh has a local minimum at:
Oh has no local minimum.
Determine the value and location of any local maximum of f. Enter the solution in (y, h(y)) form. If
multiple solutions exist, use a comma-separated list to enter the solutions.
Oh has a local maximum at:
h has no local maximum.
Calculus
Differentiation
Consider h(y) = -7 cos y +7√3 siny on [0, 2π]. Determine the intervals on which h is decreasing. Oh is decreasing on: Oh is decreasing nowhere. Determine the intervals on which h is increasing. Oh is increasing on: h is increasing nowhere. Determine the value and location of any local minimum of f. Enter the solution in (y, h(y)) form. If multiple solutions exist, use a comma-separated list to enter the solutions. Oh has a local minimum at: Oh has no local minimum. Determine the value and location of any local maximum of f. Enter the solution in (y, h(y)) form. If multiple solutions exist, use a comma-separated list to enter the solutions. Oh has a local maximum at: h has no local maximum.
Find the derivative of the function.
f(x) = sin(
6
Calculus
Differentiation
Find the derivative of the function. f(x) = sin( 6
Find all critical numbers of the function g(x)=x²-14x².
O critical numbers: x=0, x=√14, x= -√14
O critical numbers: x=0, x=√√7, x= -√7
O critical numbers: x = √14, x =
O critical numbers: x =
no critical numbers
= -√14
√7,x= -√7
Calculus
Differentiation
Find all critical numbers of the function g(x)=x²-14x². O critical numbers: x=0, x=√14, x= -√14 O critical numbers: x=0, x=√√7, x= -√7 O critical numbers: x = √14, x = O critical numbers: x = no critical numbers = -√14 √7,x= -√7
Find the relative extremum of f(x)=-3x² +30x+8 by applying the First Derivative Test.
Calculus
Differentiation
Find the relative extremum of f(x)=-3x² +30x+8 by applying the First Derivative Test.
Complete two iterations of Newton's Method for the function using the given initial guess.
f(x) = x² - 4₁ x₁ = 1.1
Calculus
Differentiation
Complete two iterations of Newton's Method for the function using the given initial guess. f(x) = x² - 4₁ x₁ = 1.1
Find the marginal revenue function.
R(x) = 3x -0.04x²
R'(x) =
Calculus
Differentiation
Find the marginal revenue function. R(x) = 3x -0.04x² R'(x) =
Find the derivative of the function.
f(θ) = cos(θ²)
f'(θ) =
Calculus
Differentiation
Find the derivative of the function. f(θ) = cos(θ²) f'(θ) =
Find y" by implicit differentiation. Simplify where possible.
x² + 3y² =3
y" =
Calculus
Differentiation
Find y" by implicit differentiation. Simplify where possible. x² + 3y² =3 y" =
Find dy/dx  by implicit differentiation.
tan(x - y) =y/2+x²
Calculus
Differentiation
Find dy/dx by implicit differentiation. tan(x - y) =y/2+x²
1. Which of the following statement is false? 
(a) d/dx In(2x) = d/dx In(x) for x > 0. 
(b) d/dx csc(x) = cot(x) csc (x) for x = (0, π). 
(c) d/dx sin(x)/ cos(x) - = 1 + tan² (x) for x = (-π /2, π/2). 
(d) d/dx2* = ln(2) - 2^x for x € (-∞, ∞). 
(e) d/dx (x³ + 2x + 1) = 3x² + 2 for x € (-∞0,00).
Calculus
Differentiation
1. Which of the following statement is false? (a) d/dx In(2x) = d/dx In(x) for x > 0. (b) d/dx csc(x) = cot(x) csc (x) for x = (0, π). (c) d/dx sin(x)/ cos(x) - = 1 + tan² (x) for x = (-π /2, π/2). (d) d/dx2* = ln(2) - 2^x for x € (-∞, ∞). (e) d/dx (x³ + 2x + 1) = 3x² + 2 for x € (-∞0,00).
Find the equation of the tangent line to
f(x) = 1 + e
X + X
2
at x = 0.
Calculus
Differentiation
Find the equation of the tangent line to f(x) = 1 + e X + X 2 at x = 0.
let f(x) = sin x. Write an expression for f(x) using the definition of the derivative, but don't evaluate the limit.
Calculus
Differentiation
let f(x) = sin x. Write an expression for f(x) using the definition of the derivative, but don't evaluate the limit.
Find the total change of f(x) between x = 1 and x = 4, when df/dx =1/x²
1.25
0.75
0.25
-0.75
Calculus
Differentiation
Find the total change of f(x) between x = 1 and x = 4, when df/dx =1/x² 1.25 0.75 0.25 -0.75
If the number of fruit flies F increases at a rate that is proportional to the number of flies present, write the differential equation that describes the rate of change in the number of fruit flies at a given time, t. Do not solve. 
dF/dt = k/F
dF/dt = -k/F
dF/dt = kF
dF/dt = tF
Calculus
Differentiation
If the number of fruit flies F increases at a rate that is proportional to the number of flies present, write the differential equation that describes the rate of change in the number of fruit flies at a given time, t. Do not solve. dF/dt = k/F dF/dt = -k/F dF/dt = kF dF/dt = tF
The interest on an account increases exponentially.
If an initial investment of $5000 earns $900 in two years, what is the rate of increase at the end of that second year?
A. $500.00
B. $488.52
C. $462.17
D. $450.00
Calculus
Differentiation
The interest on an account increases exponentially. If an initial investment of $5000 earns $900 in two years, what is the rate of increase at the end of that second year? A. $500.00 B. $488.52 C. $462.17 D. $450.00