MathematicsHard244×since 2002Q4590Let A = \left[ {\matrix{ i & { - i} \cr { - i} & i \cr } } \right],i = \sqrt { - 1}. Then, the system of linear equations A8[\matrixx\cry\cr]=[\matrix8\cr64\cr]{A^8}\left[ {\matrix{ x \cr y \cr } } \right] = \left[ {\matrix{ 8 \cr {64} \cr } } \right]A8[\matrixx\cry\cr]=[\matrix8\cr64\cr] has :AExactly two solutionsBInfinitely many solutionsCA unique solutionDNo solutionCheck answerSkip