Question

How does one show a matrix is non-singular?

Answer 1

Singular matrices are precisely those that are non-invertible i.e. have a zero determinant. What do you know about your matrix?

Answer 2

If the determinant of a matrix is 0, the matrix is said to be singular

Answer 3

take the det and if its not 0 ur good

Answer 4

Oh okay.. the matrix has an inverse and the determinant is not zero.. means its non-singular?

Answer 5

indeed... singular means non-invertible

Answer 6

Thanks a lot. :)