SOLUTION: 3a-b-3c=14,2a-b+3c=5,a+2b-4c=3

Algebra ->  Matrices-and-determiminant -> SOLUTION: 3a-b-3c=14,2a-b+3c=5,a+2b-4c=3      Log On


   

Question 323866: 3a-b-3c=14,2a-b+3c=5,a+2b-4c=3
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
[A]=%28matrix%283%2C3%2C3%2C-1%2C-3%2C2%2C-1%2C3%2C1%2C2%2C-4%29%29
[x]=%28matrix%283%2C1%2Ca%2Cb%2Cc%29%29
[b]=%28matrix%283%2C1%2C14%2C5%2C3%29%29
.
.
.
[A][x]=[b]
[x]=[A]inv[b]
.
.
.
det[A]=-32
[A]inv=%281%2F%28-32%29%29%2A%28matrix%283%2C3%2C-2%2C-10%2C-6%2C11%2C-9%2C-15%2C5%2C-7%2C-1%29%29
%28matrix%283%2C1%2Ca%2Cb%2Cc%29%29=highlight%28%28matrix%283%2C1%2C3%2C-2%2C-1%29%29%29