आव्यूह ∆ = \(\left( {\begin{array}{*{20}{c}} 6&5\\ 2&4 \end{array}} \right) \) में अवयव 2 के लिए क्रमशः उपसारणिक और सह-गुणन खंड ज्ञात करें 

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  1. M21 = -5, A21 = 5
  2. M21 = 5, A21 = -5
  3. M21 = -5, A21 = -5
  4. M21 = 5, A21 = 5

Answer (Detailed Solution Below)

Option 2 : M21 = 5, A21 = -5
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गणना​-

∆ = \(\left( {\begin{array}{*{20}{c}} 6&5\\ 2&4 \end{array}} \right)\)

अवयव '2' पंक्ति 2 और स्तंभ 1 का है इसलिए इसे 'a21' के रूप में दर्शाया गया है

2 × 2 आव्यूह उपसारणिक में केवल विकर्ण विपरीत अवयव है।

अवयव M21  के उपसारणिक = 5

अवयव A21 के सह-गुणन खंड = (-1)2+1 M21

सह गुणन खंड = -5

∴ अवयव 2 के उपसारणिक​ और सह-गुणन खंड  क्रमश: 5 और -5 हैं।

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