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Exemplo 5 de Algebra and Trigonometry, 11.6 Solving Systems with Gaussian Elimination
Problema e solução em inglês, como no livro original.
Solve the system of equations.
Resolva no papel primeiro. Depois abra a solução um passo de cada vez e pare assim que conseguir terminar sozinho.
Perform row operations on the augmented matrix to try and achieve row-echelon form.
The matrix ends up with all zeros in the last row: Thus, there are an infinite number of solutions and the system is classified as dependent. To find the generic solution, return to one of the original equations and solve for
So the solution to this system is
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