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JEE Mains · Maths · STD 12 - 9. differential equations

यदि अवकल समीकरण \(\left(2 xy ^{2}- y \right) dx + xdy =0\) का हल \(y = y ( x )\), रेखाओं \(2 x -3 y =1\) तथा \(3 x +2 y =8\) के प्रतिच्छेदन बिन्दु से होकर जाता है, तो \(| y (1)|\) बराबर है

  1. A \(1\)
  2. B \(2\)
  3. C \(3\)
  4. D \(4\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(1\)

Step-by-step Solution

Detailed explanation

\(\left(2 x y^{2}-y\right) d x+x d y=0\) \(2 x y^{2} d x-y d x+x d y=0\) \(2 x dx =\frac{ y d x - x dy }{ y ^{2}}= d \left(\frac{ x }{ y }\right)\) Now integrate \(x ^{2}=\frac{ x }{ y }+ c\) Now point of intersection of lines are \((2,1)\)…
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