Question Number 15189 by arnabpapu550@gmail.com last updated on 08/Jun/17
![If A= [(a_(ij) ) ]_(m×n) is a matrix and B is a non−singular square submatrix of order r , then](https://www.tinkutara.com/question/Q15189.png)
$$\mathrm{If}\:{A}=\begin{bmatrix}{{a}_{{ij}} }\end{bmatrix}_{{m}×{n}} \:\mathrm{is}\:\mathrm{a}\:\mathrm{matrix}\:\mathrm{and}\:{B}\:\mathrm{is}\:\mathrm{a} \\ $$$$\mathrm{non}−\mathrm{singular}\:\mathrm{square}\:\mathrm{submatrix}\:\mathrm{of} \\ $$$$\mathrm{order}\:\:{r}\:,\:\mathrm{then}\: \\ $$