Question: Heaviside successive integration with undefined in the output

Dear All,


I would like perform a symbolic integration to the following integrand with Heaviside function:


The integral I defined is as follows:

The output I got is


Could any one explain me how to avoid the undefined in the output. I tried to define the assumtions to constrain the solution. However, I failed to supress the undefined.

I expect a result of the integration should also be piecewise function.


Appreciate you constructive inputs.





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