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lecture_11_slides
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| lecture_11_slides [2017/02/27 12:34] – [Proof] rupert | lecture_11_slides [2017/02/27 12:35] (current) – [Proof] rupert | ||
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| ==== Proof ==== | ==== Proof ==== | ||
| - | * Let $J=\mat{d& | + | * Let $J=\mat{d& |
| - | * By the lemma, $AJ=\det(A) I_2=JA$. | + | |
| If $\det(A)\ne 0$: | If $\det(A)\ne 0$: | ||
lecture_11_slides.1488198893.txt.gz · Last modified: by rupert