1.5 1 0.5 -0.5 -1 -1.5 -2 10 15 25 30 in Recall that for a discrete-time sinusoid, the normalized frequency, f, is the ratio of the number of cycles over the number of samples. In the plot above, what...

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Extracted text: 1.5 1 0.5 -0.5 -1 -1.5 -2 10 15 25 30 in Recall that for a discrete-time sinusoid, the normalized frequency, f, is the ratio of the number of cycles over the number of samples. In the plot above, what is the normalized frequency expressed in decimal? Answer: Check 0.2 Consider a linear time invariant channel with amplitude response S(f) = V1.64–1.6cos(2rf) Suppose that the channel input has the form x(n) 4.9cos(2r0.1n) for all n from -0o to +0. The channel output can be written as y(n) = Acos(2r0.1n + 4) where –T < ¢="">< x.="" what="" is="" the="" numerical="" value="" of="" a?="" please="" provide="" your="" answer="" at="" least="" 3="" significant="" figures.="" hint:="" determine="" first="" the="" amplitude="" response="" at="" the="" frequency="" of="" the="" input="" signal="" x(n).="" also,="" please="" check="" the="" settings="" in="" your="" calculator.="" if="" the="" setting="" is="" degrees,="" use="" 180="" for="" t;="" if="" radians="" then="" use="" pi="" button="" (or="" 3.1416).="" answer:="" 20="" 5="">