Let B= pmatrix 1 & 2 & 1 -1 & 1 & 0 3 & -2 & 4 pmatrix

MATHEMATICS · Subjective · CBSE · Mathematics · Determinants · Determinants

Problem

Let

B=\begin{pmatrix}1 & 2 & 1\\ -1 & 1 & 0\\ 3 & -2 & 4\end{pmatrix}.

Without writing the entire inverse, calculate the first row of

B^{-1}