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Originally Posted by simplependulum ??? yes, it's correct. (a very well-known result!)
Thank you so much Mr NonCommAlg This result really surprised me !
Originally Posted by NonCommAlg yes, it's correct. (a very well-known result!) Hey! Will you please explain the last step for me? I don't understand how you converted .
Originally Posted by Kaitosan Hey! Will you please explain the last step for me? I don't understand how you converted . A simple substitution
Huh? = which doesn't make sense. How does ? Please clarify. Maybe there's some trig information I'm missing or something.
Maybe because In fact, it can be known that the derivative of tangent is also It depends on the way you learnt it ^^'
Another way to look at it:
ooh I see. Thanks! One last question - How do you integrate ? Trig sub and inverse trig function integration seem not to work.
Originally Posted by Kaitosan ooh I see. Thanks! One last question - How do you integrate ? Trig sub and inverse trig function integration seem not to work. Residue theorem That's complex analysis.
Well. In that case, I feel better! For a moment I felt like crap.
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