Question

If y = (sin x)cos x, find dy/dx​

Answer 1

Answer:

d/dx ( sinx.cosx)

= sinx.(-sinx) + cosx.cosx

= cos^2x - sin^2x

= cos2x

Hence, cos2x is the answer!

Answer 2

Answer:

dy/dx=-sin x.sin x +cos x. cos x

=-sin^2 x+cos^2 x

=cos2x

hope it helps you!!!