1) Find the first and second derivative of the function where k is a non-zero constant. f(x)=e^kx f '(x) =  f ''(x) =  a)Suppose that k is positive. i)Is the first derivative positive or negative? ii)Is the second derivative positive or negative? iii)Which of the following describes the graph of y=ekx? Decreasing and concave down Decreasing and concave up     Increasing and concave up Increasing and concave down -Suppose that k is negative. i)Is the first derivative positive or negative? ii)Is the second derivative

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter58: Achievement Review—section Five
Section: Chapter Questions
Problem 30AR: Determine dimension x to 3 decimal places.
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1) Find the first and second derivative of the function where k is a non-zero constant.

f(x)=e^kx

f '(x) = 

f ''(x) = 

a)Suppose that k is positive.

i)Is the first derivative positive or negative?

ii)Is the second derivative positive or negative?

iii)Which of the following describes the graph of y=ekx?

Decreasing and concave down
Decreasing and concave up    
Increasing and concave up
Increasing and concave down

-Suppose that k is negative.

i)Is the first derivative positive or negative?

ii)Is the second derivative positive or negative?

iii)Which of the following describes the graph of y=ekx?

Decreasing and concave down
Increasing and concave down    
Decreasing and concave up
Increasing and concave up

2)Find the first and second derivative of the function for x greater than zero.

f(x)= ln(x)

f '(x) = 

f ''(x) = 

i)Is the first derivative positive or negative?

ii)Is the second derivative positive or negative?   

iii)Which of the following describes the graph of y = ln x?

 

Decreasing and concave down
Increasing and concave up    
Decreasing and concave up
Increasing and concave down
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ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,