Question

Can someone help me differntiate cos pix/2

Answer 1

\[\cos pix/2\]

Answer 2

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

Answer 3

I'm assuming that was the question...

Answer 4

\[{ d \cos ({\pi \over 2}x) \over dx } = - \sin ({\pi \over 2}x) * {\pi \over 2}\]

Answer 5

There was no parentheses in the orginal question, would what you wrote still be the correct differntiation?

Answer 6

yup