SOLUTION: 7. Find the diagonal and trace of each of the following matrices. (i) A = 1 3 6 2-5 8 4-2 9

Algebra ->  Matrices-and-determiminant -> SOLUTION: 7. Find the diagonal and trace of each of the following matrices. (i) A = 1 3 6 2-5 8 4-2 9       Log On


   

Question 1126247: 7. Find the diagonal and trace of each of the following matrices.
(i) A =
1 3 6
2-5 8
4-2 9

Answer by ikleyn(52887) About Me  (Show Source):
You can put this solution on YOUR website!
.
Do you know the meaning of the term "diagonal of the matrix" ?

If you do, then write the 3 numbers on the diagonal - in the row.

Then add these 3 numbers.

It will be the trace of the matrix.


There is nothing difficult in it.