provide commands to

Given the following matrix M=magic (3), and provide the commands to: 4. Extract the minimum of the third column 5. Calculate the sum of all the elements of principal diagonal. Consider the following polynomial: A(x)= x - 4x + 2x + 3 and B(x)=6x2 - 4x +3. 6. Calculate the product of A(x) and B(x). 7. Calculate the roots of the derivative of the A(x) 8. Plot A(x) and B(x) in a column of 2 separate plot areas in the range [-10 10]. Add a title for each granh