1- Plot the following functions (you will need to decide on appropriate ranges for x): a- y = 1/x b- y = sin(x)cos(x), c- y = 2x2-3x + 1, Turn the grid on in all your plots, and remember to label axes and use a title. 2- Write a function to evaluate f(x; y) for any two user specified values x and y. The function f(x; y) is defined as: f(x, y) = x+y x+y x + y x + y2 x > 0 and y 0 x 0 and y < 0 x < 0 and y> 0 x