Some graphing calculators and computer programs contain a
Chapter , Problem 7.1.55(choose chapter or problem)
Some graphing calculators and computer programs contain a program that will assist you in solving a system of linear equations by rewriting the system in row echelon form. Use one of these programs to solve the systems in Exercises 55 to 58. ex1 + 2x2 - x3 + 2x4 + 3x5 = 11x1 - x2 + 2x3 - x4 + 2x5 = 02x1 + x2 - x3 + 2x4 - x5 = 43x1 + 2x2 - x3 + x4 - 2x5 = 22x1 + x2 - x3 - 2x4 + x5 = 4
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