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find-all-matrices-M-M-3-R-M-2-M-




Question Number 35622 by abdo mathsup 649 cc last updated on 21/May/18
find all matrices M ∈M_3 (R)  /  M^2  =M
$${find}\:{all}\:{matrices}\:{M}\:\in{M}_{\mathrm{3}} \left({R}\right)\:\:/\:\:{M}^{\mathrm{2}} \:={M} \\ $$

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