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cramers rule

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Solve the following linear system for x using Cramer’s rule.
Show work.
x + 2y – 3z = -22
2x – 6y + 8z = 74
-x – 2y + 4z = 29


Cramer’s rule uses determinants to find the solution

Set up a 3by3 matrix using the coefficients of the x,y and z, and find its determinant, calling it D.


You can see a good example at
http://www.mathwords.com/c/cramers_rule.htm

  • cramers rule -

    Which method is most efficient for solving large systems, Cramer's Rule or Gaussian Elimination and why?

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