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प्रश्न
If A = `[(a,b),(c,d)]` such that ad - bc ≠ 0 then A-1 is
विकल्प
`1/("ad" - "bc") ((d,b),(-c,a))`
`1/("ad" - "bc") ((d,b),(c,a))`
`1/("ad" - "bc") ((d,-b),(-c,a))`
`1/("ad" - "bc") ((d,-b),(c,a))`
उत्तर
`1/("ad" - "bc") ((d,-b),(-c,a))`
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