Question

find dy/dx y=a^3+(cos^3)(x)

Answer 1

did u try to do it?

Answer 2

Hint let u = cos(x) and do the chain rule. That's assuming a is a constant :-)

Answer 3

\[\large{\frac{d}{dx}\cos^nx=-nsin(x)\cos^{n-1}(x)}\]

Answer 4

thanks for the rule , and the hint. that was helpful

Answer 5

:)