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Compute the determinant using a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column. 7-7 9. 2 7 2 9-2

Compute the determinant using a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column. 7-7 9. 2 7 2 9-2

Elementary Linear Algebra (MindTap Course List)
Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Determinants
Section3.1: The Determinants Of A Matrix
Problem 44E: True or False ? a To find the determinant of a triangular matrix, add the entries on the main...
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Compute the determinant using a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column. 7-7 9 2 7 2 9-2 he Write the expression for the determinant using a cofactor expansion across the first row. Choose the correct answer below. ns O A. Using this expansion, the determinant is (7)(- 67)-(-7)(- 32) + (9)(77). O B. Using this expansion, the determinant is (7)(59) + (– 7)(95) + (9)(85). O C. Using this expansion, the determinant is (7)(59) – ( – 7)(95) + (9)(85). O D. Using this expansion, the determinant is (7)(-67)+(-7)(- 32) + (9)(77). =p 2 ext, refl 2 = So, the m Help me solve this View an example Get more help - Clear all Final check ate this solution Got some follow up questions? ASK AN EXPERT
Transcribed Image Text:Compute the determinant using a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column. 7-7 9 2 7 2 9-2 he Write the expression for the determinant using a cofactor expansion across the first row. Choose the correct answer below. ns O A. Using this expansion, the determinant is (7)(- 67)-(-7)(- 32) + (9)(77). O B. Using this expansion, the determinant is (7)(59) + (– 7)(95) + (9)(85). O C. Using this expansion, the determinant is (7)(59) – ( – 7)(95) + (9)(85). O D. Using this expansion, the determinant is (7)(-67)+(-7)(- 32) + (9)(77). =p 2 ext, refl 2 = So, the m Help me solve this View an example Get more help - Clear all Final check ate this solution Got some follow up questions? ASK AN EXPERT
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Step 1

Given,

Algebra homework question answer, step 1, image 1

Find determinant using co-factor expansion

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