engineering recuitment GATE CSE 2023-24 Test Series Mathematics Matrices Adjoint and Inverse of a Square Matrix
If a square matrix, \(A = \left[ {\begin{array}{*{20}{c}} 2&7\\ 3&4 \end{array}} \right]\), then find the inverse of A?
1
\(\left[ {\begin{array}{*{20}{c}} 2&7\\ 3&4 \end{array}} \right]\)
2
\(\left[ {\begin{array}{*{20}{c}} 4&{49}\\ 9&{16} \end{array}} \right]\)
3
\(\left[ {\begin{array}{*{20}{c}} 1&1\\ 1&1 \end{array}} \right]\)
4
\(\left[ {\begin{array}{*{20}{c}} \frac{-4}{13}&\frac{7}{13}\\ \frac{3}{13}&\frac{-2}{13} \end{array}} \right]\)