how do u find the derivative of (csc x)^7 -cos 4x???

Answer 1

You should have a list handy for the basic trig function derivatives

so if y = (csc x)^7 -cos 4x
dy/dx = 7(csc x)^6 ( -csc x)(cotx) + 4sin(4x)
etc

Answer 2

Thanks. My teacher told us we need to use the chain rule in these problems, and i'm having trouble figuring out when and where to use it.

Answer 3

I did use the chain rule in finding the derivative of
(csc x)^7

Answer 4

I know. I just realized that I messed up what goes where when I was doing it myself. My problem is applying it to other problems, esp when i also have to use the quotient or product rule.