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Compute the determinants in Exercises $9-14$ by cofactor expansions. At each step, choose a row or column that involves the least amount of computation.$$\left|\begin{array}{rrrrr}{4} & {0} & {-7} & {3} & {-5} \\ {0} & {0} & {2} & {0} & {0} \\ {7} & {3} & {-6} & {4} & {-8} \\ {5} & {0} & {5} & {2} & {-3} \\ {0} & {0} & {9} & {-1} & {2}\end{array}\right|$$

6

Algebra

Chapter 3

Determinants

Section 1

Introduction to Determinants

Introduction to Matrices

Samim S.

January 12, 2022

why is it "-2" [4 0 3; 7 3 4:5 0 2], where does the minus come from?

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Even today we are going to fall. Problem number 13 He given Matrixes five by five toe Cool Really minus seven three. Minus fight. Still several toe. Cyril several servant three minus six. Cool minus eight five zero five Toe minus three. Feel theory nine minus one. Oh, so we have to expand along second row, so it will be like minus two Hindu determinant off four. Perform attics for zero three minus fight seven 34 minus set five zero toe minus street zero. Set up minus one. But then we can expand along the for true 00 minus one. So what will be getting will be like minus two. Hindu minus off minus warm into the term. Lent off for Cyril minus fight What? Plus seven three minus eight 50 minus three. Then plus minus two. Indu determined off. 40 three, 734 five zero to then 0050 Again, if we expand what will be get minus two Window one and do we can expand along Second column. So plus minus. Plus it will be three in do minus 21 Verse 25 minus two window saying we can do a long three three. Indo eight minus yeah. Off a minus two Windows three in do 13 minus two. Indu seven 39 minus 42. It will be six.

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