hy prof can u plz solve this question i will really appreciate that Thanks !!!

4. (25 pts, Gradescope) Determine if the following signals of time t in seconds are periodic. For periodic signals, find the fundamental angular frequency wo in rad/s and the fundamental period To in seconds. For non-periodic signals, explain why. (5 pts each) (a) xi(t) = cos(|2t[) (b) x2(t) = cos2(2t) (c) x3(t) = 2 cos 100 t) + 3 sin 100 10it (d) x4(t) = 2 cos (10t) + 3 sin 100v2 t 101 (e) x5 (t) = cos () sin ()