Inverse of 3x3 matrix using Cofactors, Adjugate & Determinant

How to find the inverse of a 3x3 matrix using its determinant and adjoint.

Note that there's a missing negative sign at 7:57 in the simplified matrix.

[chimwemwesinkala]

thank you so much, i thought matrices were impossible to understand

[wise]

Thank you for a very straight forward explanation. Can you tell me what software and devices you used to produce the video. Thank you very much

[penesilvain]

thanks sooo much. learnt it once and for all

[alphaman]

Okay I am not sure if I follow right, if the first row is something different to 1 or -1 would you use that number to times it?

[VeravanVeen-scms]

i dont understand why she suddenly can use 1/3 instead of 1/9, someone explain pls?

[mohamedhsairi]

It slips a little mistake .... be aware !

[ab-s]

We need this explanation in Arabic, please and thank you💖