Question

Use a graphing calculator or spreadsheet software to solve 4x + y + z = 1 8x – 4y – 7z = 2 5y + 9z = 3 using matrices.

Answer 1

put the three equation in the matrice for as I do then take it to a reduced row echelon form, then you will see if he solution is trival, infinitly manay solution ot if it has a definite solution.