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Example 19 - Find minor of element 6 in the determinant - Finding Minors and cofactors

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Example 19 Find the minor of element 6 in the determinant Δ = 1﷮2﷮3﷮4﷮5﷮𝟔﷮7﷮8﷮9﷯﷯ Since 6 lies in the second row and third column, i.e. a23 = 6 Minor of a23 = M23 = 1﷮2﷮3﷮4﷮5﷮𝟔﷮7﷮8﷮9﷯﷯ = 1﷮2﷮7﷮8﷯﷯ = 8 – 14 = – 6 Thus, minor of element 6 is −6.

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.