The Determinant of a 4 by 4 Matrix Using Cofactor Expansion (Expansion by Minors)

This video explains how to find a determinant of a 4 by 4 matrix using cofactor expansion.

[greenxdshadow]

I am watching this during online lecture and you taught it 4 times faster than the professor and way better. thank you

[rikiman]

I had trouble with understanding how we eliminate the rows that have the most 0-s, and that costed me some points because I eliminated another number that was not 0, but this helped me realize what we are actually doing, so thank you.

[Salamanca-joro]

Thanks 😊 determinants are really fun to solve! I got final exam next Monday 🙌

[ZainabKashif-dj]

SO COOL METHOD THIS IS VERY INFORMATIVE.THANK YOU SO MUCH

[khalidabdirahmanmohamed]

Thank you very much for taking your time, this was very helpful

[scaanrdirnaa]

Ok one question: We're using the cofactor formula to get the determinant of a matrix, right? But the formula contains other determinants (those of 3x3 matrices).... So how can I find out the determinants of those matrices?

[bmariani]

Can you show a matrix 4x4 without any 0 values in it ? Always using the top row for the cofactors

[selenozgultekin]

why there is no place for the numbers inside the matrix in the formula, the formula stars with (-1) and does not mention anything else. while wathcing 3x3 videos they also just put (-1) in the beginning

[mattpine]

Can someone explain to me how 5 raised to the 7th is 5. I am not following that explanation.