I cannot reach the answer for this integral which is part of a bigger question related to discounting investments. I know what the answer to the integral is and have tried all the substitutions and tricks I know. Any pointer would be great!!(adsbygoogle = window.adsbygoogle || []).push({});

∫(1/(1+cosh(x))) = tanh(x) + C

Thanks, Felix

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# Integral with hyperbolic: cosh x

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