1. Plot the following functions and then \compute" the 1-D Fourier transforms of the functions: (a) A rectangular pulse function with A = 5 and x ranging over 1 x 1. (b) An impulse of height 2 occurring at x = 3. (c) A complex sinusoid of height 2 occurring at frequency u = 2. (d) What is the DC frequency component of the pulse in part (a)