Hi. I'm stuck on this integral problem: I keep playing around with substitution and +/- tricks and such like, and I just don't seem to be figuring it out.
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Hey infraRed. Hint: Try multiplying the integral inside by x/x and use the substitution u = e^(-x) + 1.
Originally Posted by infraRed Hi. I'm stuck on this integral problem: I keep playing around with substitution and +/- tricks and such like, and I just don't seem to be figuring it out. Now make the substitution and the integral becomes
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