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Math Help - general question about differentiating

  1. #1
    Junior Member
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    general question about differentiating

    hi, a question asks "find the derivatives with respect to x of the following"
    they are given in a form without y. e.g -3sin(3x) or 1/(3e^(3x))

    can i assume them to be y= .... e.g y=-3sin(3x) when differentiating or must i state: let y=........ and then differentiate that.
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  2. #2
    MHF Contributor

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    Use whatever form you are used to- it really doesn't matter whether you call it " \frac{dy}{dx}" or " \frac{df}{dx}" or call the function by any other name. A function by any other name differentiates as good!
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