What's the Determinant??

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Given a 4 by 4 matrix, what are the possible values of its determinant if all its entries are +1 or -1? This video investigates this question, providing a complete answer.

Note: In the video we often say "minor" when we mean submatrix.

#Determinants #IntegerMatrix #TriangleInequality

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Given the second version of the MAtrix det lemma, we can obtain the first version. Strange how we were all taught the first version and not the second version. PS:- awesome problem

shohamsen