Find the value of the derivative (if it exists) at each indicated extremum. (If an answer does not exist, enter DNE.)

f (x) = cosπx/2

Question

Arjun Eaton

10 February, 00:09

+4

Answers (1)

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Banjo · Answer 1

The derivative of cos (ax) is

-a*sin (ax)

So here we have a=pi/2 so

d/dx (cos (pi*x/2)) = - (pi/2) sin (pi*x/2)

Find the value of the derivative (if it exists) at each indicated extremum. (If an answer does not exist, enter DNE.)f (x) = cosπx/2