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ksaimouli
 2 years ago
Best ResponseYou've already chosen the best response.0\[\int\limits_{}^{}3\sin y \sqrt{cosy} \]

Jemurray3
 2 years ago
Best ResponseYou've already chosen the best response.1substitute u = cos(y), du = sin(y) dy

ksaimouli
 2 years ago
Best ResponseYou've already chosen the best response.0yup i did i am getting \[3\sqrt{cosy}\]

Jemurray3
 2 years ago
Best ResponseYou've already chosen the best response.1\[ \int 3\sqrt{u} du \]is a pretty easy integral.

ksaimouli
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1357088383865:dw

ksaimouli
 2 years ago
Best ResponseYou've already chosen the best response.0see i am getting <3 {sqrtcosy}/>

Jemurray3
 2 years ago
Best ResponseYou've already chosen the best response.1I reiterate that cos(y) is just u.

Jemurray3
 2 years ago
Best ResponseYou've already chosen the best response.1so that is 3 sqrt(u)

ksaimouli
 2 years ago
Best ResponseYou've already chosen the best response.0yes thats what i did 3 sqrt(u) and before we said u=cosx so i rewrote it back

ksaimouli
 2 years ago
Best ResponseYou've already chosen the best response.0is that right answer for this question 3siny sqtcosy dy

Jemurray3
 2 years ago
Best ResponseYou've already chosen the best response.1No. After your substitution the integral becomes \[ \int 3 \sqrt{u} du\] you need to integrate this, which you should be able to do in two seconds. Then, you can replace all the u's with cos(y)'s and then you'll be done.

MrDoe
 2 years ago
Best ResponseYou've already chosen the best response.0jemurray3 is correct, just think of the square root as u^1/2 i think thats what your having trouble with
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