Finite Math Project #2.pdf - Hoang 1 Project #2:...

Hoang 1
Project #2: Determinants of Square Matrices
Finite Math 1533
06/21/2020

Hoang 2
Part 1:
1) First, take Matrix A and use its values to substitute in the determinant equation for 3x3
matrices.
A =
│A│= 5 [(1*2)-(5*-1)] - 2[(2*2)-(5*1)] + 3[(2*-1)-(1*1)]
Then, simplify to reach your answer.
│A│= 24
2) First, take Matrix B and use its values to substitute in the determinant equation for 4x4
matrices.
B =
│B│= (1) - (3) + 0 + 0
Then, expand by cofactors for the determinants of 3x3 still left.
│B│= (1){(-2)[(1*0)-(-1*1)] - (5)[(0*0)-(-1*-3)] + (2)[(0*1)-(1*-3)]}
-
(3){(4)[(1*0)-(-1*1)] - (2)[(0*0)-(-1*-3)] + (1)[(0*1)-(1*-3)]}