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Math Help - Formula of a derivative problem

  1. #1
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    Formula of a derivative problem

    So here's my problem:

    Given that \frac{d}{dx}(f(2x^3))=7x^4, find a formula for the derivative of f.

    Would I solve using the chain rule?
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  2. #2
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    Quote Originally Posted by ascendancy523 View Post
    So here's my problem:

    Given that \frac{d}{dx}(f(2x^3))=7x^4, find a formula for the derivative of f.

    Would I solve using the chain rule?
    Substitute u=2x^3.
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