题目
题目

MCD1550 / MCD2140 - T1 - 2025 TEST 2 (Week 6)

单项选择题

\(U = \left[ {\begin{array}{*{20}{c}}1&1&0\\2&3&4\end{array}} \right]\,\,\;\quad V = \left[ {\begin{array}{*{20}{c}}3\\1\end{array}} \right]\,\,\;\quad W = \left[ {\begin{array}{*{20}{c}}{0.6}&{0.5}\\{0.4}&{0.5}\end{array}} \right]\;\,\,\;X = \left[ {\begin{array}{*{20}{c}}3&5\\4&6\end{array}} \right]\quad \,\, \\ Y = \left[ {\begin{array}{*{20}{c}}1&3&2\\0&5&6\\0&0&1\end{array}} \right]\;\quad \) X –1 =

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标准答案
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思路分析
The problem asks for X^{-1}, i.e., the inverse of the 2x2 matrix X. First, identify X: X = [ [3, 5], [4, 6] ]. For a 2x2 matrix [ [a, b], [c, d] ], the inverse exists if det(X) = ad - bc ≠ 0, and is given by (......Login to view full explanation

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