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krypton Group TitleBest ResponseYou've already chosen the best response.1
\[d/dx \int\limits_{0}^{cosx} \frac{ t }{ 1+t } dt\]
 2 years ago

Outkast3r09 Group TitleBest ResponseYou've already chosen the best response.1
\[\frac{cosx}{1+cosx}\]
 2 years ago

krypton Group TitleBest ResponseYou've already chosen the best response.1
how did u do it?
 2 years ago

Zekarias Group TitleBest ResponseYou've already chosen the best response.0
@Outkast3r09 I think u made a miss take in your first step (While u made the integral)
 2 years ago

Outkast3r09 Group TitleBest ResponseYou've already chosen the best response.1
the derivative of an integral is simply the integral itself with the variables in other words ... integrals and derivatives cancel eachother out
 2 years ago

Outkast3r09 Group TitleBest ResponseYou've already chosen the best response.1
\[\frac{cosx}{1+cosx} \]is your answer
 2 years ago

Zekarias Group TitleBest ResponseYou've already chosen the best response.0
It should be\[\cos(x)\ln(1+\cos(x))\]
 2 years ago

Outkast3r09 Group TitleBest ResponseYou've already chosen the best response.1
dw:1349804491261:dw
 2 years ago

Zekarias Group TitleBest ResponseYou've already chosen the best response.0
Now take the derivative
 2 years ago

Outkast3r09 Group TitleBest ResponseYou've already chosen the best response.1
it shouldn't be anything @ zekarias
 2 years ago

Outkast3r09 Group TitleBest ResponseYou've already chosen the best response.1
@zekarias ... you don't need to do anything
 2 years ago

Zekarias Group TitleBest ResponseYou've already chosen the best response.0
What u get finally?
 2 years ago

krypton Group TitleBest ResponseYou've already chosen the best response.1
so the answer is just cosx/1+cosx ?
 2 years ago

krypton Group TitleBest ResponseYou've already chosen the best response.1
thanks,wolfram gives me the same answer,just wanted to make sure how it was done
 2 years ago

Outkast3r09 Group TitleBest ResponseYou've already chosen the best response.1
it's just simply knowing how an integral work... there is a lot of work to do it zekarias way but if you just know that the the derivative on an integral will bring you back to the f(x) within the integral... that's all you need to know(This works anytime the lower limit is some real number) because if you think about it.... dw:1349804918350:dw if you take the derivative of f(n)... you'll always get zero
 2 years ago

krypton Group TitleBest ResponseYou've already chosen the best response.1
oh thanks alot sweedy :)
 2 years ago
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