MCQ
यदि $A=\left[\begin{array}{cc}2 & -1 \\ 1 & 3\end{array}\right]$ तो $A^{-1}=$
- A$\left[\begin{array}{cc}\frac{3}{7} & -\frac{1}{7} \\ \frac{1}{7} & \frac{2}{7}\end{array}\right]$
- ✓$\left[\begin{array}{cc}\frac{3}{7} & \frac{1}{7} \\ -\frac{1}{7} & \frac{2}{7}\end{array}\right]$
- C$\left[\begin{array}{ll}\frac{1}{3} & \frac{1}{7} \\ \frac{1}{7} & \frac{2}{7}\end{array}\right]$
- Dइनमें से कोई नहीं