In MATLAB, no need to do 1A

Item_1A) Use "fprintf statements immediately after the heading information of the program to give a student definition of the vocabulary term mathematical function and of the vocabulary term "scalar". Item_1B) 18. Solve the following system of five linear equations: 1.5x 2y + z + 3u +0.5w = 7.5 3x + y - 2 + 4u - 3w = 16 2x + 6y - 3z- u + 3 w = 78 5x + 2y + 4z - 2u+6w = 71 - 3x + 3y + 2z + 5u + 4w = 54 Item_1C) Use your firstname_y as the function variable name, use your lastname_1 for the variable input name Remember, the Matlab program should calculate the results. 2. For the function y = (x2 +1)*x", calculate the value of y for the following val- ues of x: -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 3. Solve the problem by first creating a vector x, and then creating a vector y, using element-by-ele- ment calculations