0out of 15 points if the continuous time signal y(t) = 2 cos (-2*π*56*t) is sampled at a frequency of 52 hz, and the corresponding discrete-time signal is then reconstructed at the same sampling frequency, what is the frequency of the resulting continuous time signal (in hz)? include the sign (- or +) of your answer, as determined directly from the frequency calculations. in other words, do not simplify using cos(-x) = cos(x)