Inverting 3x3 part 2: Determinant and adjugate of a matrix | Matrices | Precalculus | Khan Academy

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Finishing up our 3x3 matrix inversion

Missed the previous lesson?

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Inverse a 3X3 matrix every time he says 'Home stretch' or 'Real estate'

UnknownUser
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please make one for 5x5 matrix .. thanks :D

TheDave
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lmao the entire time watching this. Thank you for the hilarious pain you went through sal

Macko
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Final step: multiply solution by original matrix to produce identity matrix. Just to check your work. If you're insane, multiply in both directions just to make sure.

lapointe
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Big big help! Love the way u don't try n patronise ur viewers

deshprasad
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I love the idea of not putting this into a part of Algebra 2 curriculum, but sadly it is.

NicholasVLee
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Any reason to do this over augmenting your matrix with the identity matrix, and transforming them using elementary row operations? It seems much quicker and easier.

Grundoko
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but why is the answer diffrent from the first method sal?

mbisetakobana
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Great video!

But why are these videos unlisted?

DonivDecap
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i love you salman khan can you adopt me

suzunemontag
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Don't be mad, but I think there is a small misstake. It is in the matrix of minors.

CreaNwlyMK
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The transphobes of the cofactory matrix

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