MCQ
$\frac{d y}{d x}=1+x+y+x y$ का हल है :
  • A
    $x-y=k(1+x y)$
  • $\log (1+y)=x+\frac{x^2}{2}+k$
  • C
    $\log (1+x)=y+\frac{x^2}{2}+k$
  • D
    इनमें से कोई नहीं

Answer

Correct option: B.
$\log (1+y)=x+\frac{x^2}{2}+k$
(B)

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