Invertible matrices and determinants | Matrices | Precalculus | Khan Academy

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An invertible matrix is a matrix that has an inverse. In this video, we investigate the relationship between a matrix's determinant, and whether that matrix is invertible.
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The youtube algorithm brung me here, and i stayed watched it all, even though i did not need the course!

griffydz
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is this precalc? i never encountered this in precalc
great video as always

nura