6. Matrix multiplication works if its two operands 1 point are vectors; specifically, the first one is a column vector and the second one is a row vector of any length. are scalars. are square matrices of the same size. All of the above options are correct 7. The variable t after these commands v = 1:3:33; t = v(end) will be: 1 point 33 32 31 None of the above. 8. The variablet after these commands t = (16:-4:1)'.^2 will be 1 point O a 4-element vector - a 4x4 matrix a scalar None of the above. MATLAB will print an error message