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

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

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

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

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

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

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

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

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

Jemurray3
 one year 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
 one year 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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