Differentiate:

Question

y = sin(2x - 1) + cos(x^3) - tan(3x)

Answer 1

Do each term, using your basic trig derivatives

so
y' = 2cos(2x-1) -3x^2(sin(x^3)) - 3sec² (3x)

Answer 2

Differentiate y=cos(3x)sin(x/2)