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 2 years ago
integrate 1/(5+sinx3cosx)
let u = tan(x/2)
cosx = (1u^2)/(1+u^2)
sinx = 2u/(1+u^2)
dx = 2/(1+u^2)
 2 years ago
integrate 1/(5+sinx3cosx) let u = tan(x/2) cosx = (1u^2)/(1+u^2) sinx = 2u/(1+u^2) dx = 2/(1+u^2)

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Dido525
 2 years ago
Best ResponseYou've already chosen the best response.0Oh my god... This is a monster to integrate...

jaersyn
 2 years ago
Best ResponseYou've already chosen the best response.0yeah, after substituting everything i got up to 1/[4(u+(1/8))^2 + (15/64)]

jaersyn
 2 years ago
Best ResponseYou've already chosen the best response.0if you could help me with that, that'd be cool. I don't know what to do next to integrate

Dido525
 2 years ago
Best ResponseYou've already chosen the best response.0You don't have to use intergration by parts. You can use substitution twice.

Dido525
 2 years ago
Best ResponseYou've already chosen the best response.0Dammit. Sorry. I can't solve this :( . It's beyond my level of math.

jaersyn
 2 years ago
Best ResponseYou've already chosen the best response.0quick unrelated question: if i have 1/u(1u^2) can i use partial fractions to integrate? even though its (u^2 + 1) in the denom? i never came across a negative like that

Dido525
 2 years ago
Best ResponseYou've already chosen the best response.0I don't think so... Sorry. I can't help you any further with this :( .

jaersyn
 2 years ago
Best ResponseYou've already chosen the best response.0that's okay, thanks for looking though

jaersyn
 2 years ago
Best ResponseYou've already chosen the best response.0i know igbasallote got dis

Dido525
 2 years ago
Best ResponseYou've already chosen the best response.0I would love to see how to do this question.

RadEn
 2 years ago
Best ResponseYou've already chosen the best response.0I GOT IT, BUT VERY LONG TO WRITTING THIS STEPS :(

RadEn
 2 years ago
Best ResponseYou've already chosen the best response.0as information (if im not mistake), i got the answer : dw:1349498667471:dw

RadEn
 2 years ago
Best ResponseYou've already chosen the best response.0yes, i think my answer is right ^^,, bacasue the "god of math" told me that : http://www.wolframalpha.com/input/?i=int%28dx%2F%285%2Bsin%28x%293cos%28x%29%29%29
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