The signal v(t) = cos (2ft) + cos (4ft) + cos (6ft) is sampled at 5f. 1.

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Question:

The signal v(t) = cos (2πft) + cos (4πft) + cos (6πft) is sampled at 5f.
1. Write an expression for the instantaneously sampled signal.
2. We are interested in signals upto 2f. Can it be recovered by using a low pass filter with
bandwidth slightly higher than 2f? Does it recover first two terms in v(t)?