For matrix A = [8(2 5 -11 7)], (adj A)’ is equal to

(a) [8(2 5 -11 7)]    (b) [8(7 5 11 2)]
(c) [8(7 11 -5 2)]    (d) [8(7-5 11 2)]

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Transcript

Question 15 For matrix A = [โ– 8(2&5@โˆ’11&7)], (adj A)โ€™ is equal to (a) [โ– 8(2&5@โˆ’11&7)] (b) [โ– 8(7&5@11&2)] (c) [โ– 8(7&11@โˆ’5&2)] (d) [โ– 8(7&โˆ’5@11&2)] A =[โ– 8(2&5@โˆ’11&7)] Now, adj A = [โ– 8(2&5@โˆ’11&7)] =[โ– 8(๐Ÿ•&โˆ’๐Ÿ“@๐Ÿ๐Ÿ&๐Ÿ)] Thus, (adj A)โ€™ = [โ– 8(7&11@โˆ’5&2)] So, the correct answer is (C)

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.