SOLUTION: find the determinant and inverse of the following matrices: use the Gauss Jordan Method for the inverse. 1 2 3 0 1 4 0 0 8 I got the determinant, it should be 8. i would li

Question 324567: find the determinant and inverse of the following matrices:
use the Gauss Jordan Method for the inverse.
1 2 3
0 1 4
0 0 8

I got the determinant, it should be 8. i would like to know if im correct.
thank you.
Found 3 solutions by jim_thompson5910, stanbon, solver91311:
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
For any upper triangular matrix, the determinant is just the product of the diagonal entries. So the determinant is d = 1*1*8 = 8. So you are correct.
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
Yes, the determinant is 8.
Cheers,
Stan H.
Answer by solver91311(24713)   (Show Source): You can put this solution on YOUR website!

Yes, the Determinant is 8.

Write back and I'll send you a document that shows you the Gauss-Jordan Inverse.

John

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