- #1
Raghav Gupta
- 1,011
- 76
Homework Statement
If A is a square matrix of order 3 then the true statement is
1. det(-A) = - det A
2.det A = 0
3.det ( A + I) = I + detA
4.det(2A) = 2detA
Homework Equations
NA
The Attempt at a Solution
2. option is obviously not true.
Making a random matrix A and verifying properties 1. , 3. , 4. would be lengthy.
What is the approach for this?