First year student so please excuse my lack of knowledge.
As i understand i need to use convolution which is: $$ y^{out}(t) = u^{in}(t) * h(t) $$ Or maybe my thoughts are wrong so please correct me.
But still i do not understand how to draw magnitude spectrum of output signal.
I did find images of convolution but still do not understand.
Edit:
So, using Dan Boschen hint i tried to solve this task. I assumed than i need to multiply two graphs as they were in frequency domain.