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JEE Mains · Maths · STD 11 - 9. straight line

यदि उस बिंदु का बिंदुपथ, जिसकी बिंदु \((2,1)\) और \((1,3)\) से दूरियां \(5: 4\) के अनुपात में हैं, \(a x^2+b y^2+c x y+d x+e y+170=0\) है, तो \(\mathrm{a}^2+2 \mathrm{~b}+3 \mathrm{c}+4 \mathrm{~d}+\mathrm{e}\) = ...........

  1. A \(5\)
  2. B \(-27\)
  3. C \(37\)
  4. D \(437\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(37\)

Step-by-step Solution

Detailed explanation

\( \text { let } P(x, y) \) \( \frac{(x-2)^2+(y-1)^2}{(x-1)^2+(y-3)^2}=\frac{25}{16} \) \( 9 x^2+9 y^2+14 x-118 y+170=0 \) \( a^2+2 b+3 c+4 d+e \) \( =81+18+0+56-118 \) \( =155-118 \) \( =37\)
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