I have to compute the arc length of I found the formula * I don't know how to do this integral. Can you please help me?
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Dear vincisonfire, one of tricks: cos(theta) = cos(2*(theta/2)) and cos(2x) = cos^2(x)-sin^2(x).
I would have Back to my problem * I should have 8 no ?
khm...khm... such in x = -3
Integrate from 0 to Pi and multiply by 2.
Hello, vincisonfire! I have to compute the arc length of I found the formula: . We're expected to know this identity: . We have: . Therefore: . . Got it?
It is not true! See above!
Originally Posted by Soroban We have: . Therefore: . . Got it? Here's where the mistake is, that should be hence,
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