What is the derivative of sin 2x?
Find derivative of sin 2x
Let y=sin 2x
Differentiate it w.r.t x using chain rule.
dydx=ddxsin 2x =cos 2x ddx 2x chain rule:ddxfgx=f'gxddxgx =cos 2x×2 =2cos 2x
Hence, the derivative of sin 2x is 2cos 2x.