integral of tan(ax)*tan(bx)..............can we solve this general case.....i solved for some special cases like for angles 2x & 4x...............

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TopNewestNot possible to have an elementary close form. Think of \(\tan(A+B) = \frac{\tan A + \tan B}{1 - \tan A \tan B} \). – Pi Han Goh · 1 year, 8 months ago

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– Pranav Patil · 1 year, 8 months ago

i tried it..........rearranging......but no use......i also manipulated it differentely to use integration by parts...........also converted it to sin&cos......and used defactorization formulas....but its going too complicated.......and integral calculators are also not ansring.......Log in to reply

– Pi Han Goh · 1 year, 8 months ago

That's why I said there's no closed form. You need to use elliptic integrals to solve it.Log in to reply

– Pranav Patil · 1 year, 8 months ago

i dont know about that............can you just give an idea or link.....Log in to reply

This. – Pi Han Goh · 1 year, 8 months ago

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