Problem 2:

Make a code by performing following steps

1. Define a radius r with r = 2
2. Define an empty matrix A.
3. Define a row vector x whose first element is -4, and the increment size is 0.025 and last element is 3. So, the first element will be -4 and second element will be -3.9750 so on and so forth.
4. Make a for loop that saves (rcosx )² and in Matrix A on every loop.
5. Make a plot by calling and from the Matrix A and plot should be between values of and values of . So, should be on x-axis and should be on y-axis.

Note: The empty matrix should be defined outside for loop

Note: There is multiplication happening between r and that is and multiplication happening between r and that is .