Question

A^-1 exist if A is ​

Answer 1

Answer:

If the determinant of the matrix A (detA) is not zero, then this matrix has an inverse matrix. This property of a matrix can be found in any textbook on higher algebra or in a textbook on the theory of matrices.

Answer 2

Step-by-step explanation:

a^-1 exists if a is not equal to 0. For rest all numbers it is defined. It is not defined for 0 as when we will simplify, 0 will come in denominator and the number will become not defined.

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