In each case below, describe the resulting composite filter, specifying both the filter type (lowpass, highpass, bandpass, or bandstop) and the cutoff frequency or frequencies. All filters are ideal with gain one, zero delay, and in continuous time. Filter 1 is a bandpass filter with cutoff frequencies of (4 + a) and (22 +a).
Filter 2 is a highpass filter with a cutoff frequency of 1(5 + a). Filter 1 and Filter 2 are placed in series.