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AP EAMCET202319 May 2023Morning ShiftMathematicsDifferential EquationsActual

The particular solution of the different equation d x d y = y(1+y y) x (x^2 e ) , y(1)=0

Options

  1. Ay y=x^2 x
  2. By^2 y= x
  3. Cy= ( e^2 e )(x-1)
  4. Dy=e^2 x

Correct answer

A. y y=x^2 x

Step-by-step solution

aligned & d x d y = y(1+y y) x ( x ^2 e ) , y(1)=0 & x (x^2 e ) d x= ( y+y y) d y & Let x^2 e=t & x d x= 1 2 e d t & 1 2 e t d t=- y+y y- d y d y y d y+C & 1 2 e [t t-t]=y y+c aligned aligned & x^2 e 2 e ( x^2 e-1 )=y y+c & x^2 2 ( x^2+ e-1 )=y y+C & x^2 x=y y+C _ e ^ e =1 & When x=1, y=0 & 1 1=0+C & C=0 aligned Hence x^2 x=y y

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