a. You want to calculate your grade point average (GPA). Create a MatLab program that will take credit hours and grades for each course and calculate your GPA for that semester. Assume that you will always have four courses each semester. Your program should:

i. Request that the user input the number of credit hours for a first course, and then the number of grade points earned for that course (A 4, B 3, etc.). Assume no + or - grades exist

ii. Request credit hours and grade points for a second, third, and fourth course

iii. Calculate your GPA, using the following formula: summation of the product of the semester hours and number of points earned divided by the summation of semester hours

iv. Output your semester GPA with descriptive text b. Create a sample run for a student getting an A in a 4 credit course, B in a 3 credit course, C in a 2 credit course, and B in another 4 credit course. The sample run should show both your input and the output