matlab

f, g and h functions are given below. Do the given mathematical calculations by using symbolic toolbox. f = 3x2 + 5xy - 15x + 8y-9 g = 8t2 + 5x2 + 2t - 17 h = 4a3 + 5y2 + 8a - 4 a) Set the functions b) Find the solution of fat x=2 and y=-3 c) Plot the f function between the values of -10 to 15 d) Find the differentiate of g function with respect the variable t e) Find the solution of h function at a=5