How to find invers of this matrix
Answers
Adjoint method[refer the attachments ]
finding A^(-1)by adjoint method
Answer:
inverse of this matrix = -1 -1 0
-2 3 -4
-2 3 -3
Step-by-step explanation:
A = 3 -3 4
2 -3 4
0 -1 1
we know that, inverse of A = A⁻¹
A⁻¹ = Adj ( A ) / determinant of A
then, we have to calculate adjoint of A and determinant of A.
determinant of A (| A |) = [3 (-3 +4 )] - [-3 ( 2 -0 )] + [4 (-2 -0 )] = 1
adj (A) = transpose of -1 -2 -2 = -1 -1 0
-1 3 3 = -2 3 -4
0 -4 -3 = -2 3 -3
then, inverse of A = [1 /1] * -1 -1 0
-2 3 -4
-2 3 -3
= -1 -1 0
-2 3 -4
-2 3 -3