Question

evaluate each determinant

| 5 7|
| 2 3 |

Answer 1

5*3 - 7*2 = 15-14 = 1

Answer 2

thank you - no idea what that meant. so you just cross multiply and then subract what answers you get?

Answer 3

yes.

Answer 4

for 3x3 matrix and higher, little more complex, but not too hard

Answer 5

thank you. SO much!

Answer 6

np

Answer 7

I need a reason to use this in real life - when do you think you would?