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Find the adjoint of the matrices. [(1,2),(3,4)] - Mathematics

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प्रश्न

Find the adjoint of the matrices.

`[(1,2),(3,4)]`

योग
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उत्तर

Here A = `[(1,2),(3,4)]` then

adj A = `[(A_11, A_12),(A_21, A_22)]^T`

`= [(4,-3),(-2,1)]^T   ...[(A_11 = 4, A_12 = - 3),(A_21 = - 2, A_22 = 1)]` 

`= [(4,-2),(-3,1)]`

Hence, adjoint matrix of `[(1,2),(3,4)]` = `[(4,-2),(-3,1)]`

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अध्याय 4: Determinants - Exercise 4.5 [पृष्ठ १३१]

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एनसीईआरटी Mathematics Part 1 and 2 [English] Class 12
अध्याय 4 Determinants
Exercise 4.5 | Q 1 | पृष्ठ १३१

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