माना कि दो समाश्रयण रेखाएँ x - 3y + 4 = 0 और 2x - 7y + 8 = 0 किसी द्विचर आँकड़ों से परिकलित की गई हैं। यदि byx और bxy क्रमशः y पर x और x पर y के समाश्रयण रेखाओं के समाश्रयण गुणांक हैं, तो bxy + 7byx का मान क्या है?

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NDA-II 2024 (Maths) Official Paper (Held On: 01 Sept, 2024)
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  1. -2
  2. 1
  3. 2
  4. 5

Answer (Detailed Solution Below)

Option 4 : 5
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NDA 01/2025: English Subject Test
30 Qs. 120 Marks 30 Mins

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व्याख्या:

x पर y की समाश्रयण रेखा

⇒x - 3y + 4 = 0

⇒x = 3y - 4

⇒ bxy = 3

x पर y की समाश्रयण रेखा

⇒ 2x - 7y+8 = 0

⇒ y =

⇒ byx = 2/7

अब

⇒ b xy + 7b yx = 3 + 7 x 2 /7 = 5

∴ विकल्प (d) सही है

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