Some integrals with problematic evaluation

[parisse]

Unfortunately the Prime and the web version of Xcas do not have exceptions enabled, this make computations difficult to interrupt. Of course, I could have a closer look and probably find a workaround for this specific integral, but this will not solve the real problem, and you would find another problematic integral. Therefore if you are running very complicated integrals on the Prime, take a paperclip with you, or run it on the binary version of Xcas where there is a working STOP button that can cancel a computation (by clean exception throw or by thread cancellation).