math.la.e.linsys.3x3.soln.row_reduce.i
A 3x3 matrix equation Ax=b is solved for two different values of b. In one case there is no solution, and in another there are infinitely many solutions. These examples illustrate a theorem about linear combinations of the columns of the matrix A.
Focus on computations skills. Convert from linear system to augmented matrix and back. Perform row operations. Solutions included. Uncomment \printanswers line before compiling to show solutions.