



 
Hi Seth, You let u = t^{2} and v' = sin t. Your error is in the next line since u = t^{2} gives u' = 2t. You have v correct, v =  cos t. Now use the integration by parts expression. You will probably have to use integration by parts again to complete this problem. Harley  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 