Problem 11a): An ideal lowpass filter has a cut-off frequency of 25 kHz and a gain magni- tude of 10 in the passband. Use MATLab to generat a plot of the transfer function magnitude to scale versus frequency, f, as a semi-log plot, then label the plot at f = 0, 25 kHz and 100 kHz. Problem 11b): An ideal highpass filter has a cut-off frequency of 25 kHz and a gain mag- nitude of 10 in the passband. Use MATLab to generat a plot of the transfer function magnitude to scale versus frequency, f, as a semi-log plot, then label the plot at f = 0, 25 kHz and 100 kHz.