Here, we will perform the signal operations for a given finite and bounded signal and will then plot the final signal obtained through signal operation. For this you are required to write a Matlab function.. For a given signal z(t), we will define a new signal as y(t) = ax(btc) + d Your function needs to take r(t); t (the duration for which r(t) is defined); T, (the interval between time samples); and the coefficients a, b, c and d. The function should then return y(t) and a vector of t values of y(t) with steps T. We should then be able to draw y(t) with respect to its t. Here, z(t) will be given as samples with respect to its t in T, steps. Note that that the coefficients can be negative. Also note that for the domain of r(t) and y(t) you need to take t as in steps of T, since Matlab code will take discrete time samples. (a) (b) Implement the function described above in Matlab. You can utilize Matlab functions in implementing your code. Test your code for simple functions like rect(t/4), rect(t/4-4), tri(t/4), and tri(t/4 + 4) etc.