SOLUTION: Solve the following set of equations, using matrix notations: 3x + 3y + 2z = 15 2x – 4y + 5z = 9 4x + y – 3z + = -3

Algebra ->  Matrices-and-determiminant -> SOLUTION: Solve the following set of equations, using matrix notations: 3x + 3y + 2z = 15 2x – 4y + 5z = 9 4x + y – 3z + = -3       Log On


   

Question 318175: Solve the following set of equations, using matrix notations:
3x + 3y + 2z = 15
2x – 4y + 5z = 9
4x + y – 3z + = -3
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
[A]=%28matrix%283%2C3%2C3%2C3%2C2%2C2%2C-4%2C5%2C4%2C1%2C-3%29%29
[x]=%28matrix%283%2C1%2Cx%2Cy%2Cz%29%29
[b]=%28matrix%283%2C1%2C15%2C9%2C-3%29%29
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[A][x]=[b]
[x]=[A]inv[b]
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det[A]=135
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[A]inv=%281%2F135%29%2A%28matrix%283%2C3%2C7%2C11%2C23%2C26%2C-17%2C-11%2C18%2C9%2C-18%29%29
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[x]=%28matrix%283%2C1%2C1%2C2%2C3%29%29