(1 point) a. Let A be defined in MATLAB as a 5 x 4 matrix with non-zero entries. Fill in the blanks below so that the following script reduces A by performing row reduction to the form i.e. all entries below the (1,1)-entry are zero for i = 2: /A *AC end (Hint: i represents the ith row of A, and the command inside the loop reduces each row of A by Gaussian elimination.) b. Consider the following MATLAB script: a 5 for i-1:2 a-a+bi end What values has the variable a been assigned? a has been assigned the value What values has the variable b been assigned? b has been assigned the value then , then finally then , then finally (1 point) a. Let A be defined in MATLAB as a 5 x 4 matrix with non-zero entries. Fill in the blanks below so that the following script reduces A by performing row reduction to the form i.e. all entries below the (1,1)-entry are zero for i = 2: /A *AC end (Hint: i represents the ith row of A, and the command inside the loop reduces each row of A by Gaussian elimination.) b. Consider the following MATLAB script: a 5 for i-1:2 a-a+bi end What values has the variable a been assigned? a has been assigned the value What values has the variable b been assigned? b has been assigned the value then , then finally then , then finally