What is Matrix Determinant (2x2)?
Linear algebra tool.
How it Works
ad - bc.
Example
Input: [[1,2],[3,4]]
Result: -2
FAQ
Formula?
For [[a,b],[c,d]], result is ad - bc.
What if det is 0?
The matrix is singular (not invertible).
Application?
Solving systems of linear equations, finding area.
Negative det?
Implies orientation reversal.
Larger matrices?
Use expansion by minors for 3x3+.