Please show all work Determine whether the following signals are periodic or not

Question

Please show all work

Determine whether the following signals are periodic or not. If periodic, find the fundamental period and the fundamental frequency. x(t) = cos 6t + sin 8t + ej2t x(t) = cos 3 t + sin 5t x(t) = cos (3pi t + pi/3) + sin (7 pi t + 2 pi/3) x(t) = cos 6t + sin 8t + e2t u(t) x(t) = {cos 7t} u(t) Sketch the following signals: x(t) = rect ((t-5)/4) + rect ((t+5)/4) x(t) = Delta ((t-7)/2) + Delta ((t+7)/2) x(t) = r(t+2) - 2 r(t) + r(t-2) x(t) = Delta (-2t +2) x(t) = Delta ((t/4)+2) Determine whether the following signals are power signals, energy signals or neither. Justify your answer. {A, a, and b are positive real constants.} x(t) = A sin t x(t) = A [u(t-a) - u(t + a)] x(t) = r(t) -r(t-l) x(t) = e a 1 u(t) x(t) = t u(t) x(t) = u(t) x(t) = A exp(b t)

Explanation / Answer

1.a)periodic

period=pi

b)periodic

period=2*pi

c)not periodic

d)not periodic

e)not periodic

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.