Evaluate the determinant of the following matrix A =

by doing a co-factor expansion.

Please expalin how to do it, thank you!

this is the exercise on my task

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- Aug 31st 2009, 08:06 PMlin.13579Matrix doing a cofactor expansion
Evaluate the determinant of the following matrix A =

by doing a co-factor expansion.

Please expalin how to do it, thank you!

this is the exercise on my task - Aug 31st 2009, 09:10 PMeXist
If you have:

The cofactor for is the determinant of:

The cofactor for is negative(-) of the determinant of:

The cofactor for is the determinant of:

- Sep 1st 2009, 06:38 AMHallsofIvy
Why are you being asked to do a "co-factor expansion" if you don't know what that is?

I would recommend starting your co-factor expansion using the first column. That way you just have 2 times and expand**that**determinant on the**second**column. Do you see why? - Sep 2nd 2009, 04:10 PMlin.13579