f(x)=sin3x*cos3xf(x)=1/2 * 2sin3x*cos3xf(x)=1/2* sin6xf'(x)=(1/2 *sin6x)'=1/2 *(sin6x)' = 3cos6x
f(x) = sin3x•cos3x=1/2*2 sin3x•cos3x=1/2sin6x
f`=1/2*6cos6x=3cos6x C
f(x)=sin3x*cos3x
f(x)=1/2 * 2sin3x*cos3x
f(x)=1/2* sin6x
f'(x)=(1/2 *sin6x)'=1/2 *(sin6x)' = 3cos6x
f(x) = sin3x•cos3x=1/2*2 sin3x•cos3x=1/2sin6x
f`=1/2*6cos6x=3cos6x C