How do you differentiate #f(x) = sin (cos3x) - sinxcos3x#?
1 Answer
May 4, 2015
The differential would be -3sin3x cos(cos3x) - cosx cos3x +3 sin3x sinx
f'(x)=
= cos(cos3x)*3(-sin3x) - (cosx cos3x-3sin3x sinx)
= -3sin3x cos(cos3x) - cosx cos3x +3 sin3x sinx
