Note: for all continuous time signals x(t), time t = R; for all discrete time signals x[k], time index k Z. (a) Show the following Fourier Transform and F{tri(t)}(f) = sinc (f) F{et }() = e You may use the table of operational property but not directly use the table of Fourier Transform pair. (b) Obtain the Fourier Transform of the following signal and compute its energy. (c) Compute the following integration x(t) = sinc (10+) e e -t -j6t dt