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3Is this homework? If not (e.g. you're just trying to solve Ax=b), then trying to explicitly compute an inverse may not be what you want to do.– Tim WhitcombCommented Jul 18, 2009 at 19:46
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11it is not homework. it is for a personal project. and i dont want to "waste" time on learning matrix inversion for 4x4 which seems quite complicated compared to 3x3– clampCommented Jul 18, 2009 at 20:59
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13I do not think this is a stupid question that deserves -1 score.– stribikaCommented Jul 18, 2009 at 21:19
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4if your matrix is a rotation/scaling/translation one, related: stackoverflow.com/questions/155670/… & web.archive.org/web/20130806093214/http://…– user719662Commented Jan 29, 2015 at 19:48
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you may also be interested in this if you want a bit more performance lxjk.github.io/2017/09/03/… and you cannot process multiple matrices at a time– SopelCommented Feb 24, 2020 at 12:14
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