Adjoint, Determinant and Inverse of Matrix
See also: Matrix multiplication, Addition and Subtraction
Online calculation
You can also find the inverse of a matrix using GaussJordan Elimination method.
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The inverse of a square matrix A is the matrix A^{1} such that
A A^{1} = I
For example, if
A = 
 , then A^{1} = 

because A A^{1} = 

 = 

To get the inverse of a square matrix A, use the following formula
A^{1} =  1  adj(A) 
det(A) 
If the determinant of the matrix is 0, the matrix doesn't have an inverse and it's called a singular matrix.
You can try to find out the inverse of a matrix (if any) by using the online calculator above.