Ask your own question, for FREE!
Mathematics 19 Online
OpenStudy (babyslapmafro):

Please help me finish the following integration problem (click to see).

OpenStudy (babyslapmafro):

\[\int\limits_{}^{}\sin^2xcos^2xdx\]

OpenStudy (babyslapmafro):

this is where i am stuck... \[\frac{ x }{ 4 }-\frac{ 1 }{ 4 }\int\limits_{}^{}\cos^2(2x)dx\]

OpenStudy (ksaimouli):

okay use u sub

OpenStudy (anonymous):

You can always use the power reduction identity. cos^2(x)=1/2(1+cos(2x))

OpenStudy (ksaimouli):

i mean by parts

OpenStudy (ksaimouli):

@Babyslapmafro how did u get their

OpenStudy (babyslapmafro):

\[\int\limits_{}^{}\frac{ 1-\cos^2(2x) }{ 4 }\]

OpenStudy (ksaimouli):

|dw:1361662482766:dw|

OpenStudy (babyslapmafro):

u=1/4 v=\[\int\limits_{}^{}\cos^2(2x)dx\]

OpenStudy (babyslapmafro):

are those the correct values for u and v?

OpenStudy (ksaimouli):

hmm use \[\cos^2x= -\sin^2x+1\]

OpenStudy (ksaimouli):

did u get the idea

OpenStudy (ksaimouli):

\[\int\limits_{}^{}\sin^2x(-\sin^2x+1)\]

OpenStudy (ksaimouli):

\[\int\limits_{}^{}-\sin^4x+\sin^2x\]

OpenStudy (ksaimouli):

lol what i have done

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!