7. Show an example command that creates a vector from 20 to 40 in which the elements are separated by 5. 8. Show three different ways that you can create the following vector: X= 10 12 14 16 18 9. What do the following commands do? Please show your results and explain. X = [1 2;3 4] X = [10]' X = rand X = rand (2,3) X = zeros (4,3) X=ones(2,3) X = eye(2) 10. What does Inf mean in MATLAB? 11. Which operator set is used for left and right division respectively?