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I was checking an answer to an integral on Wolfram Alpha and noticed I don't know how they distinguish between ln(x) and ln("absolute value of"(x)). It appears all of their inputs and outputs imply absolute value (taking positive and negative x-values)

Is anyone here familiar with their site and can explain why this is or how they distinguish between the two?

Here is a link to "ln(x)" on wolfram alpha:

https://www.wolframalpha.com/input/?i=lnx

P.S. In case anyone is wondering why the input says "log(x)", Wolfram Alpha only deals with ln, so log = ln on W.A.

Thanks,

Rudy

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# B Wolfram Alpha graph of ln(x) shows as ln(abs(x))

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