Question

if f(x)=sin^2(x) find f^1(pi/4)

Answer 1

i think your question is
\[f \left( x \right)=\sin ^2x,find ~f \prime \left( \frac{ \pi }{ 4} \right)\]

Answer 2

find f'(x)
then put x=pi/4

Answer 3

yes thats it

Answer 4

i did that but im not getting the right answer

Answer 5

let us together we do it.
first find f'(x)

Answer 6

-9sin(3x)

Answer 7

f'(x)=2 sin xcos x=sin 2x

Answer 8

2x=2*pi/4=pi/2
sin pi/2=1

Answer 9

is the final answer 1?