Answer
See below
Work Step by Step
Obtain: $(f * g)=\int^t_0f(t-\xi )g(\xi)d\xi\\
=-\int^0_t f(\omega)g(t-\omega)d\omega\\
=\int^t_0 f(\omega) g(t-\omega) d \omega\\
=g * f$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.