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If \(A=\left[\begin{array}{ll}1 & 0 \\ \frac{1}{2} & 0\end{array}\right]\) then \(A^{2022}\) is

Question and options

If A=[10120]A=\left[\begin{array}{ll}1 & 0 \\ \frac{1}{2} & 0\end{array}\right] then A2022A^{2022} is
  1. [101220220]\left[\begin{array}{cc}1 & 0 \\ \frac{1}{2^{2022}} & 0\end{array}\right]
  2. [1010110]\left[\begin{array}{cc}1 & 0 \\ 1011 & 0\end{array}\right]
  3. [1020220]\left[\begin{array}{cc}1 & 0 \\ 2022 & 0\end{array}\right]
  4. None of the given options is correct

Answer and explanation

Correct answer: D - None of the given options is correct
A^2 = [[1,0],[1/2,0]] = A, so A is idempotent and A^2022 = A = [[1,0],[1/2,0]]. None of the listed matrices equals this, so none of the given options is correct.

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