Hey.
What's the answer for this:
Actually, that is a very badly posed integral. It is never a good idea to use the same letter to represent the variable of integration and a limit of integration and that is done twice here. Other than that, it's pretty close to trivial. We can "separate" those integrals and do them separately:
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And, of course, and are trivial!
should also be easy though not "trivial".