# Compute the determinant

1. Apr 12, 2006

Hi guys, what doe it mean when we are asked to compute the determinant the following way:

compute determinant across first row, down second column:
|1_0_3|
|2_2_1|
|4_0_3|

I know how to compute but here I need to understand the way to do it.

Thank you
B

2. Apr 12, 2006

### Galileo

They are likely asking you to compute the determinant in two ways:
(1) Across the first row
(2) Down the second column
As you know, you can expand the determinant across any row or column.

3. Apr 12, 2006

### HallsofIvy

Staff Emeritus
It's talking about "expanding by minors". Do you know how to do that?