বিপরীত ম্যাট্রিক্স
If A=[012123311] A = \left [ \begin{matrix} 0 & 1 & 2 \\ 1 & 2 & 3 \\ 3 & 1 & 1 \end{matrix} \right ] A=013121231 and B = A-1, then b23 =?
1
2
- 1
- 2
A=[012123311]B=A−1=[11212−43−152−3212] \begin{array}{l}A=\left[\begin{array}{lll}0 & 1 & 2 \\ 1 & 2 & 3 \\ 3 & 1 & 1\end{array}\right] \\ B=A^{-1}=\left[\begin{array}{ccc}1 & \frac{1}{2} & \frac{1}{2} \\ -4 & 3 & -1 \\ \frac{5}{2} & -\frac{3}{2} & \frac{1}{2}\end{array}\right]\end{array} A=013121231B=A−1=1−425213−2321−121
b23=−1 b_{23}=-1 b23=−1
যদি B= [201−2] \left [ \begin{matrix} 2 & 0 \\ 1 & - 2 \end{matrix} \right ] [210−2] হয় তবে, B−1 B^{- 1} B−1 নিচের কোনটি?
A একটি 3×3 ম্যাট্রিক্স এবং |A|=-7 হলে, |(2A)-1|=?
A=[7x210],B=[56−7−9] A = \left [ \begin{matrix} 7 & x \\ 2 & 10 \end{matrix} \right ] , B = \left [ \begin{matrix} 5 & 6 \\ - 7 & - 9 \end{matrix} \right ] A=[72x10],B=[5−76−9]
B-1 = ?
For square matrices AAA and BBB of the same order, we have adj(AB)=?adj (AB) = ?adj(AB)=?
