Mathematics
Undergraduate

途中の過程を教えてください

らい^いで でS (7ー7e十cの)?を示せ。
行列式

Answers

余因子展開で3*3(さらには2*2)の行列式に書き直せばよい

https://ja.wikipedia.org/wiki/余因子展開

yinyue

ありがとうございます😊

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