Posted by Julie on .
a) determine the derivative of y = sin2x
b) determine the derivative of y = 2SinxCosx
c) shoe that derivatives in parts a) and b) are equal
d) explain why derivatives in parts a) and be should be equal.

Calculus grade 12 
Logan,
a) 2cos2x
b) 2cosx*cosx  2sinx*sinx = 2cos2x
c) double angle identity