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# 341hw7 - -x 1 1-x-x 1 1-x(your answer will be an expression...

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Homework 7, due Friday October 21st , in class 1. Let A denote the matrix 1 1 1 1 1 2 4 8 1 3 5 9 1 4 7 11 . Compute the determinant of A by hand , using whatever rules or shortcuts you find helpful. 2a. Find the determinant of - 2 1 0 0 1 - 2 0 0 0 0 - 2 1 0 0 1 - 2 . 2b. Find the determinant of
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Unformatted text preview: -x 1 1-x-x 1 1-x (your answer will be an expression involving x ). 2c. There are certain values of x that make the matrix in 2b have determi-nant 0. What are those values of x ?...
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