Aufgaben:Problem 13

In the first part of the solution for problem one, the derivative w.r.t time of \(\xi\) is never used... it either be changed to the actual usecase, or left away as it is shown in the next steps.

Also one may should show that \(\frac{d}{dt}\left(\int_0^t\phi\left( s\right)ds\right) = \phi\left( t\right)\)

Regards Patrick

Thank you for your hint. My previous attempt used this derivative, so you're absolutely right, I can certainly delete that. I think the second statement is actually a formulation of the Fundamental Theorem of Calculus, so I will put that as a remark behind the step where I used it.

Cheers Valentin