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Math Help - How do a find the answer for the log of something that isnt base 10?

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    How do a find the answer for the log of something that isnt base 10?

    This is the question:
    Im just curious as to whether its even possible to solve this, because they want me to find the derivative, and the inverse of it
    Thankyou!
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  2. #2
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    Quote Originally Posted by appleseed View Post
    This is the question:
    Im just curious as to whether its even possible to solve this, because they want me to find the derivative, and the inverse of it
    Thankyou!
    Note that 2^x = e^{ln 2^x} = e^{(ln 2) x}.

    To get the inverse, the usual approach is to swap around y and x and then make y the subject.
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