Please see the attached file for the fully formatted problems.
Find derivatives of these functions chosing appropriate methods:
a) f(x) = 4x3 - 2x cos x
b) g(x) = (x-2)3(x2+2x+1)3 sin2x / (x-1)2(x2+4)
c) h(t) = sin (2t2 -6)
Derivatives of trigonometric functions are found. The solution is explained and well presented.