Question

Which of the following matrices are non-singular ? If the matrix is non-singular, find its inverse




the question os for the below picture​

Answer 1

Answer:

Singular matrix is square matrix whose determinant is equal to Zero.

So, non-singular matrix A is a matrix whose determinant is non-zero.

⟹ inverse of A i.e. A

−1

exist.

∴A

−1

=

∣A∣

adjA

.... [∣A∣



=0]

Answer 2

Answer:

which of the following matrices are nonsingular? if the matrix is non-singular find is 3 -3 2 1