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

  • derivatives -

    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)

  • derivatives -

    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.

  • derivatives -

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

  • derivatives -

    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.

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