i have big trouble solving this: i tried... trig. relations - failed for me subsitution - failed for me splitting the integral in two... - failed for me derive gives me something completely different from my solution(s)
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Originally Posted by coobe i have big trouble solving this: What is the derivative of
Originally Posted by coobe i have big trouble solving this: i tried... trig. relations - failed for me subsitution - failed for me splitting the integral in two... - failed for me derive gives me something completely different from my solution(s) Note that It follows that in this case A=2x and so your problem reduces to which should be easier
thats neat, thank you both for the quick reply! i just realize that i need some refreshment on Trigonometry, will work on that before i dig deeper into integrals
Originally Posted by coobe i have big trouble solving this: derive gives me something completely different from my solution(s) You can derive a few trig equations by also doing u-substitution. Try u=sin(2x) and w=cos(2x). Both work. Use different c's though and let x=0 afterwards to solve for those c's.
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