For the following three questions, try do it by hand, and verify using MATLAB [You should do both, by hand, and verify by MATLAB for this practice] 2.1 Answer the following questions for the array shown below. 0.0 0.5 array1 = 0.0-1.1 2.1 0.1 2.1 -6.6 -3.5 6.0 2.8 3.4 0.3 -0.4 1.3 1.1 5.1 0.0 1.1 -2.0 (a) What is the size of array1? (b) What is the value of array1 (1,4)? (c) What is the size and value of array1(:,1:2:5)? (d) What is the size and value of array1 ([13], end)?