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Isn't the inverse of y = e<sup>x</sup> y = ln(x) and not x = ln(y)? -beasty401
:If, by any chance you are still looking at this page: both are valid. x = ln(y) describes the exact same ''relationship'' as y = e<sup>x</sup>, though, whereas y = ln(x) describes the inverse relationship (x and y swapped). When working with inverses, you may swap the x and y at the beginning, or you may swap them at the end. Either way works. Not ever swapping them works too, depending on your goal.
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