Let y = f ( x ) be the solution of the differential equation y ( x + 1 ) d x - x 2 d y = 0 ,   y ( 1 )…

Let y=f(x) be the solution of the differential equation y(x+1)dx-x2dy=0, y(1)=e. Then limx0+f(x) is equal to
  1. 0
  2. 1e

     

  3. e2
  4. 1e2

Solution

Given,

y(x+1)dx-x2dy=0

x+1x2dx=dyy

1x+1x2dx=dyy

Now integrating both side we get,

logex-1x=logey+c

Now on using y1=e we get, c=-2

So, the equation of curve becomes logex-1x=logey-2

y=elnx-1x+2

Hence, limx0+elnx-1-1x+2=e-=0.

Asked in: JEE Main 2023 (29 Jan Shift 1)

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