2. Write a MATLAB program that performs the following tasks:

1. Prompt the user to enter a value n. Then Construct a row vector x using the : operator.

x = {1, 2, 3, 4, 5, 6, n}

2. Create a new vector called xx = {-n, , -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, , n}
3. Using xx to create a new array xy, which looks like

-n -6 -5 -4 -3 -2 -1

1 2 3 4 5 6 n

4. Create a 20 by 20 matrix, in which elements at even rows are zeros, elements at odd rows are ones. Requirements: use fewer than 5 statements.