Find the inverse of the matrix (if there is one) algebraically.

Find the inverse of the matrix (if there is one) algebraically.  If there isn’t an inverse, say that the matrix is singular

[3 1 2]

[3 2 -1]

[1 1 1]

Find the inverse

Find the inverse of the 2x2 matrix below

[-3 1]
[-6 2]


Solution:

so our matrix is not invertible

Matrix operation

Find the determinant

Find the determinant of

|-4 0|

|1 3|

Matrix operations

Matrix Operations

Matrix operations