anonymous 5 years ago what is the derivative of cos^2x^3

1. anonymous

$=−6x^2\cos(x^3)\sin(x^3)$

2. anonymous

Do you mean $\cos ^{2}(x^3)$? If you do, then you need to look up the trig identity for derivative of cos^2 and then apply chain rule (if you don't know it you can ask, but it's also googleable.)