Question

how do I get critical points from -πsin(πx)=0?

Answer 1

critical point is where derivative is =0

Answer 2

no i need something like
cos(2sinx+1)=0
cosx=0, x=pi/2 or x= 3pi/2
sinx= -1/2 x=7pi/6 or x=11pi/6

Answer 3

but i need that format with the other problem