I cant figure these 2 out. Can you also show the steps? Thank You so much
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I would use u substitution on the first one using: and for the second one, try integration by parts:
Originally Posted by larryboi7 I cant figure these 2 out. Can you also show the steps? Thank You so much use substitution method HINT : 1) let x= 2 sin t use sin^2(x)=1-cos^2(x) 2) use cos^2(x)=1-sin^2(x) and let sin x=t so that cosx dx =dt and simplify
1)
how do i find sin2t?
For the 2nd one, use cos(x)^2=1 - sin(x)^2 Then let u = sin x, and the remaining cos x is the du.
Originally Posted by danielomalmsteen 1) after doing all that, how do i solve for sin2t?
Originally Posted by larryboi7 after doing all that, how do i solve for sin2t? to restore the changes of variables?
Originally Posted by danielomalmsteen to restore the changes of variables? yes
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