Computer Science Question (1) A discrete-time signal x[n] is defined as: x[n] = [ XXXXXXXXXX] Write a MATLAB code to plot the following signals: - a) x[−2n + 2]. b) x[n-1] u[2 − n]. c) x[n-2] r[ n]....

Question (1)
A discrete-time signal x[n] is defined as: x[n] = [-3 1 2 3 0 -1 -2 3]
Write a MATLAB code to plot the following signals: -
a) x[−2n + 2].
b) x[n-1] u[2 − n].
c) x[n-2] r[ n].
Question (2)
plot the convolution of:
x[n] = [1 4 3]
h[n] = [1 2 3] without using conv function in MATLAB