3. (10%) Suppose x takes on the values x = 0.0, 0.2, 0.4, 0.6, ..., 4.8. Write Octave statement(s)/ expression(s) to do the following. a) (2%) Create the vector x. b) (4%) Compute the array y that results from the function y = e** sin(4x). c) (2%) Determine the total number of elements in y. d) (2%) Determine the index of the middle element in y.