# Using u-sub for inetgral(x^4sinxdx)

1. Feb 23, 2012

### aglo6509

So I came across a problem that said to use u-sub to solve:

integral(x^4sinxdx)

But the only way I could think of solving it is by the tabular method (or by parts.) I'm not asking in the sense of a homework question I'm just curious to see what I substitute u for in this problem.

Thanks.

2. Feb 25, 2012

### tiny-tim

hi aglo6509!

(try using the X2 button just above the Reply box )

i don't think you can solve that by a substitution