Question

what dy/dx for y=cot^2 (e^3x)

Answer 1

Note:
\(\frac{d}{dx} (cot x)=-csc x cot x\)
\(\frac{d}{dx} (e^x)=e^x\)
Are you familiar with the chain rule and power rule?

Answer 2

yes i familia with that.. i get -3cosec^2 e^3x? what do you think?