SOLUTION: matrix solve x-2y=-1 and 2x+y=8

Algebra ->  Matrices-and-determiminant -> SOLUTION: matrix solve x-2y=-1 and 2x+y=8      Log On


   

Question 362661: matrix solve x-2y=-1 and 2x+y=8
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
[A]=%28matrix%282%2C2%2C1%2C-2%2C2%2C1%29%29
[x]=%28matrix%282%2C1%2Cx%2Cy%29%29
[b]=%28matrix%282%2C1%2C-1%2C8%29%29
.
.
.
det[A]=5
.
.
.
[A]inv=%281%2F5%29%2A%28matrix%282%2C2%2C1%2C2%2C-2%2C1%29%29
.
.
.
[x]=%28matrix%282%2C1%2C3%2C2%29%29