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Thread: Integration Pros! Can you integrate this? tanxtan2xtan3x dx .:Resolved:.

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  1. Jan 21st, 2004, 08:40 PM #1
    voidflux
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    Question Integration Pros! Can you integrate this? tanxtan2xtan3x dx .:Resolved:.

    Hello everyone! I was wondering if anyone knew how to integrate the following integral,
    Code:
    //Since I don't know how to make an integral sign, i'll use 'S'

S (tanx)(tan2x)(tan3x) dx;

The answer is, 
(1/3)ln(4cos(x)^2-3)-(1/2)ln(2cos(x)^2-1)-(2/3)ln(cos(x));
    Any idea how to get there? Thanks!

    I got that answer from the math program maple 9
    Last edited by voidflux; Feb 1st, 2004 at 04:14 PM.
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