[header] How to find the inverse of a matrix [title] Make sure your matrix is square. [step] A matrix can have an inverse matrix only if its number of columns is equal to its number of rows. If your matrix is not square, there is no inverse. 
[title] Check whether your matrix is 2x2. [step] If your matrix has 2 rows and 2 columns, you can find its inverse directly with this method.