Question 1 (28 marks)
Using the following system of linear equations
— X2 = 2 + 2X2 + X3 = 4
2/4+ X2 + X, = 6 1. Write it in a matrix form and identify the metrbc of coefficients (denote as matrix A). endogenous variables and constants. 2. Find the inverse of the matrix of coefficients (A). 3. Find the product of matrix A and its inverse. 4. Solve for x;. x;. and X;.
Sample Solution