09-240/Classnotes for Tuesday December 1
From Drorbn
Jump to navigationJump to search
--- Wiki Format ---
MAT240 – December 1st
Basic Properties of det: Mnxn→F: 0 det(I) = 1
1.
- Also, note that exchanging two rows flips the sign.
2.
- These are "enough"!
3.
- Adding a multiple of one row to another does not change the determinant.
The determinant of any matrix can be calculated using the properties above.
Theorem: