# Math Help - Use the properties of the determinant to find det(A)

1. ## Use the properties of the determinant to find det(A)

I just need help getting started.

Any help is appreciated!

2. Originally Posted by DarK
I just need help getting started.

Any help is appreciated!
Not sure if this is a property of determinant, but u can row reduce it the matrix.

For example $-r_1+ r_2= r_2$ and $-r_1+ r_3= r_3$

Then it should become obvious.

Hope this helps

3. Yes, that is a "property of determinants":

Subtracting a multiple of one row from another does not change the determinant.