1. How many complex numbers z are there such that z3
= 1?
2. Translate x(t) = -cos(πt + π/3) into standard form A⋅sin(2πft
+ φ) (There are multiple correct answers)
3. If fs = 100 Hz, what are three aliasing
frequencies for f = 80 Hz?
4. A signal x is delayed by one sample and scaled by −1/2,
producing a new signal y[n] = −1 2 x[n − 1]. (a) How does Y[m]
relate to X[m]? (b) What...