An XCas question....

[webmasterpdx]

Well, what I found nice about wolfram alpha is the fact that I didn't have to create assume() statements beforehand. It did that work for me. In my original post I put a link to an example...it did the integration and said for RE(a)>0. To get it to work on xcas, I had to do an assume(RE(a)>0) first. Often it's hard to know what assumptions to make beforehand....it's often trial and error.