/sci/ - Science & Math

Anonymous Mon Apr 9 16:20:44 2018 No.9659993 [View]
File: 17 KB, 838x293, Determinante 3x3.png [View same] [iqdb] [saucenao] [google]

lets say we have a 3x3 matrix. How can we prove that the determinant of it can not be the sum of 6 positive numbers? I am having trouble finding out a relatively smart way of solving this- pls help

>>	Anonymous Wed Apr 4 01:34:10 2018 No.9644135 [View] File: 17 KB, 838x293, Determinante 3x3.png [View same] [iqdb] [saucenao] [google] >>9644127

>>	Anonymous Thu Mar 8 22:31:19 2018 No.9571875 [View] File: 17 KB, 838x293, Determinante 3x3.png [View same] [iqdb] [saucenao] [google] Fuck this shit

>>	Anonymous Wed Sep 23 19:22:43 2015 No.7546998 [View] File: 17 KB, 838x293, determinant.png [View same] [iqdb] [saucenao] [google] What are some good ways to tell if a determinant is =/=0 (i.e. if the matrix is invertible) without calculating it? The matrix will most probably be a 3x3, maximum 4x4.

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/sci/ - Science & Math

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