13. Plot the function in the domain . Notice that the function has a vertical asymptote at . Plot the function by creating two vectors for the domain of x. The first vector (name it x1) includes elements from 0 to 1.9, and the second vector (name it x2) includes elements from 2.1 to 4. For each x vector create a y vector (name them y1 and y2) with the corresponding values of y according to the function. To plot the function make two curves in the same plot (y1 vs. x1, and y2 vs. x2).