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Math Help - derivatives...5 problems

  1. #1
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    derivatives...5 problems

    I have a couple functions that I had to take the derivatives of... and I'm not sure if I got the answers right.

    Here are the problems:

    Find dy/dx.

    1. y=(1+cos^2*7x)^3
    2. y=(1+cos2x)^2
    3. y=x/sqrt(1+2x)
    4. y=sin^2(3x-2)
    5. y=sqrt(tan5x)

    Thanks~
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  2. #2
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    Dear kdl00,

    I think you could check these derivations easily with, webMathematica Explorations: Step-by-Step Derivatives
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  3. #3
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    Hello kdl00
    Quote Originally Posted by kdl00 View Post
    I have a couple functions that I had to take the derivatives of... and I'm not sure if I got the answers right.

    Here are the problems:

    Find dy/dx.

    1. y=(1+cos^2*7x)^3
    2. y=(1+cos2x)^2
    3. y=x/sqrt(1+2x)
    4. y=sin^2(3x-2)
    5. y=sqrt(tan5x)

    Thanks~
    You say that you're not sure whether you got the answers right. Why not show us what you have done, and we'll check them for you?

    Grandad
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