Problem 1. Using MATLAB find: a) the product of matrices A and B, i.e. AB, b) determinants of the matrices A,B and AB, c) inverse of the matrices A,B, and AB, for given A=56040121040801120206010100101009,B=26101437111548121659130 Problem 2. Using MATLAB find the roots of the following polynomials: a) x3+4x25x b) x4+3x2+7 c) 3x4+x+x2x8+7. Problem 3. Using Simulink, model the system below and obtain the output for the following values of :1,0.1,0,0.1,1