If \(A=\left[\begin{array}{ll}3&-4\\ 1&-1\end{array}\right]\) then which of the following is true |
\(A^{2022}=\left[\begin{array}{ll}1&0\\ 0&1\end{array}\right]\) \(A^{2022}=\left[\begin{array}{ll}4045 &-8088 \\ 2022 & -4043\end{array}\right]\) \(A^{2022}=\left[\begin{array}{ll}4045 & -8088\\ 2022 & -4045\end{array}\right]\) \(A^{2022}=\left[\begin{array}{ll}4045 & -8088\\ -2022 & -4043\end{array}\right]\) |
\(A^{2022}=\left[\begin{array}{ll}4045 &-8088 \\ 2022 & -4043\end{array}\right]\) |
\(A=\left[\begin{array}{ll}3&-4\\ 1&-1\end{array}\right]=\begin{bmatrix}1&0\\0&1\end{bmatrix}+\begin{bmatrix}2&-4\\1&-2\end{bmatrix}\) (A = I + B) $B^2=\begin{bmatrix}0&0\\0&0\end{bmatrix}=0⇒B^3=0,B^4=0....B^n=0$ for $n≥2$ so $A^{2022}=[I+B]^{2022}$ $=I^{2022}+2022B+0...$ $=\begin{bmatrix}1&0\\0&1\end{bmatrix}+\begin{bmatrix}4044&-8088\\2022&-4044\end{bmatrix}=\left[\begin{array}{ll}4045 &-8088 \\ 2022 & -4043\end{array}\right]$ |