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Methodology Questions >> How to >> Calculate Log(not base e) of a number
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Message started by hyphyInfant on Jun 3rd, 2014 at 12:48pm

Title: Calculate Log(not base e) of a number
Post by hyphyInfant on Jun 3rd, 2014 at 12:48pm
Hello,

     I need to calculate the Log (base j) of a number where j is not e but have no idea how to do this. I will appreciate if anyone could please assist.

hyphyInfant

Title: Re: Calculate Log(not base e) of a number
Post by Steven on Jun 3rd, 2014 at 1:29pm
Hello hyphyinfant,

Please take a look at wikipedia's list of logarithmic identities, specifically, "changing the base".

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In hyphy, you can test this by issuing the statement:
fprintf(stdout, Log(100)/Log(10));

Thanks,
Steven

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