Simplification of nonlinear differential equation












0












$begingroup$


Given this nonlinear differential equation
$$
[(1+epsilon y) y']'+ 2xy'= 0, 0 < x < infty,
$$

why we can write it like the following?
$$
[(1+epsilon y) (1+ epsilon y)' ]' + 2x(1+epsilon y)'= 0 , 0 < x < infty
$$










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    0












    $begingroup$


    Given this nonlinear differential equation
    $$
    [(1+epsilon y) y']'+ 2xy'= 0, 0 < x < infty,
    $$

    why we can write it like the following?
    $$
    [(1+epsilon y) (1+ epsilon y)' ]' + 2x(1+epsilon y)'= 0 , 0 < x < infty
    $$










    share|cite|improve this question











    $endgroup$















      0












      0








      0





      $begingroup$


      Given this nonlinear differential equation
      $$
      [(1+epsilon y) y']'+ 2xy'= 0, 0 < x < infty,
      $$

      why we can write it like the following?
      $$
      [(1+epsilon y) (1+ epsilon y)' ]' + 2x(1+epsilon y)'= 0 , 0 < x < infty
      $$










      share|cite|improve this question











      $endgroup$




      Given this nonlinear differential equation
      $$
      [(1+epsilon y) y']'+ 2xy'= 0, 0 < x < infty,
      $$

      why we can write it like the following?
      $$
      [(1+epsilon y) (1+ epsilon y)' ]' + 2x(1+epsilon y)'= 0 , 0 < x < infty
      $$







      calculus ordinary-differential-equations






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      edited Dec 1 '18 at 17:57









      rafa11111

      1,119417




      1,119417










      asked Dec 1 '18 at 17:48









      U22U22

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          $begingroup$

          Note that $(1+epsilon y)'=epsilon y'$. So if $epsilon neq 0$, we can cancel out $epsilon$ from second equation to get back the first one.






          share|cite|improve this answer









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            $begingroup$

            Note that $(1+epsilon y)'=epsilon y'$. So if $epsilon neq 0$, we can cancel out $epsilon$ from second equation to get back the first one.






            share|cite|improve this answer









            $endgroup$


















              2












              $begingroup$

              Note that $(1+epsilon y)'=epsilon y'$. So if $epsilon neq 0$, we can cancel out $epsilon$ from second equation to get back the first one.






              share|cite|improve this answer









              $endgroup$
















                2












                2








                2





                $begingroup$

                Note that $(1+epsilon y)'=epsilon y'$. So if $epsilon neq 0$, we can cancel out $epsilon$ from second equation to get back the first one.






                share|cite|improve this answer









                $endgroup$



                Note that $(1+epsilon y)'=epsilon y'$. So if $epsilon neq 0$, we can cancel out $epsilon$ from second equation to get back the first one.







                share|cite|improve this answer












                share|cite|improve this answer



                share|cite|improve this answer










                answered Dec 1 '18 at 17:57









                Thomas ShelbyThomas Shelby

                2,119220




                2,119220






























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