Find the 1st derivative of the function:

y = 1/4 sin^2 (2x)

So confused...

1 answer

dy/dx
=(1/4)d(sin^2(2x))/d(sin(2x))*d(sin(2x))/dx
=(1/4)*2sin(2x)*cos(2x)*2
=sin(2x)cos(2x)
=(1/2)sin(4x)