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Math Help - Derivaties of trigonometric functions and natural logs.

  1. #16
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    I gave it a spin, but I'm not sure if I did it correctly. Here is my work.

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  2. #17
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    Quote Originally Posted by FullBox View Post
    I gave it a spin, but I'm not sure if I did it correctly. Here is my work.
    That's correct!

    \displaystyle \frac{d^2}{dx^2}\left[5x\cos(x^2)\right] = -30x\sin{x^2}-20x^3\cos{x^2}.
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  3. #18
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    Thanks for all the help and patience man, I truly appreciate it!
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