please use mathlab codes

Problem 3. points 20 - Use MATLAB Idealized spring-mass systems have numerous applications throughout engineering. Fig 2 shows an arrangement of four springs in series being depressed with a force of 2000 kg. At equilibrium, force-balance equations can be developed defining the interrelationships between the springs where k's are spring constants. If ki through k4 are 150, 50, 75 and 225 N/m, respectively, compute the r's 1. using the Matlab command inv(), 2. using the Matlab command mldivide (or back-slash or the operator), 3. using LU-decomposition and the Matlab command lu(). (Hint: for LU-decomposition read section 10.1.1 of textbook and refer to Matlab's site for matrix factorization hit the link!) 4. Compute the condition number of the system's matrix using Matlab's command cond() Explain if this is a well- or ill-conditioned system. 12 0 Figure 2: Figure for problem 3