Please enter the matlab code for the following questions

3. a) Declare the function f(x)-4x3 +5(x - 1.5)2 synbolidy b) Find the minimum of fic) on the domain [-14] 4. a) Define the nction g(x) cos(x) sin(x) symbolicly. c) Plot g(x) and g (x) and g "(x) on the same graph with domain [-2 5] 5. Calculate the 39) y g(x,y) cos(xy)eat x 2 and y 3. ax