*only*using simple arithmetic.

(Why would anyone assign a 4x4 determinant for students to do without matrix calculators or computers? Who

*does*that anymore? Even the book acknowledges that 3x3 is the practical limit!)

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Date: 2016-09-12 01:21 pm (UTC)From:novel_machinist## no subject

Date: 2016-09-13 12:22 am (UTC)From:wallwalker(He did show us the easier way to take larger matrix determinants today, though, so that'll help.)