What is meant by homogeneous boundary conditions?












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I am sorry if this is basic knowledge for differential equations but it has been a long time since I took the class, I probably learnt it and forgot about it. I would appreciate the explanation. Thank you!










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  • 5




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    It means the function is zero at the boundaries
    $endgroup$
    – Alex
    Dec 3 '17 at 21:48










  • $begingroup$
    Makes sense, I was thinking that was the case but was not sure. Thanks!
    $endgroup$
    – dareToDiffer07
    Dec 3 '17 at 21:51
















3












$begingroup$


I am sorry if this is basic knowledge for differential equations but it has been a long time since I took the class, I probably learnt it and forgot about it. I would appreciate the explanation. Thank you!










share|cite|improve this question









$endgroup$








  • 5




    $begingroup$
    It means the function is zero at the boundaries
    $endgroup$
    – Alex
    Dec 3 '17 at 21:48










  • $begingroup$
    Makes sense, I was thinking that was the case but was not sure. Thanks!
    $endgroup$
    – dareToDiffer07
    Dec 3 '17 at 21:51














3












3








3


1



$begingroup$


I am sorry if this is basic knowledge for differential equations but it has been a long time since I took the class, I probably learnt it and forgot about it. I would appreciate the explanation. Thank you!










share|cite|improve this question









$endgroup$




I am sorry if this is basic knowledge for differential equations but it has been a long time since I took the class, I probably learnt it and forgot about it. I would appreciate the explanation. Thank you!







ordinary-differential-equations analysis






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asked Dec 3 '17 at 21:46









dareToDiffer07dareToDiffer07

2817




2817








  • 5




    $begingroup$
    It means the function is zero at the boundaries
    $endgroup$
    – Alex
    Dec 3 '17 at 21:48










  • $begingroup$
    Makes sense, I was thinking that was the case but was not sure. Thanks!
    $endgroup$
    – dareToDiffer07
    Dec 3 '17 at 21:51














  • 5




    $begingroup$
    It means the function is zero at the boundaries
    $endgroup$
    – Alex
    Dec 3 '17 at 21:48










  • $begingroup$
    Makes sense, I was thinking that was the case but was not sure. Thanks!
    $endgroup$
    – dareToDiffer07
    Dec 3 '17 at 21:51








5




5




$begingroup$
It means the function is zero at the boundaries
$endgroup$
– Alex
Dec 3 '17 at 21:48




$begingroup$
It means the function is zero at the boundaries
$endgroup$
– Alex
Dec 3 '17 at 21:48












$begingroup$
Makes sense, I was thinking that was the case but was not sure. Thanks!
$endgroup$
– dareToDiffer07
Dec 3 '17 at 21:51




$begingroup$
Makes sense, I was thinking that was the case but was not sure. Thanks!
$endgroup$
– dareToDiffer07
Dec 3 '17 at 21:51










2 Answers
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The simplest way to test whether an equation (here the equation for the boundary conditions) is homogeneous is to substitute the zero function and see whether it equals to zero.






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    0












    $begingroup$

    If your differential equation is homogeneous (it is equal to zero and not some function), for instance, $$frac{d^2y}{dx^2}+4y=0$$ and you were asked to solve the equation given the boundary conditions,
    $$y(x = 0) = 0$$
    $$y(x = 2pi) = 0$$



    Then the boundary conditions above are known as homogenous boundary conditions.



    It is important to remember that when we say homogeneous (or inhomogeneous) we are saying something not only about the differential equation itself but also about the boundary conditions as well.



    Formulation and motivation for this answer have been summarized from Paul's Online Notes






    share|cite|improve this answer









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      2 Answers
      2






      active

      oldest

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      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

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      active

      oldest

      votes









      1












      $begingroup$

      The simplest way to test whether an equation (here the equation for the boundary conditions) is homogeneous is to substitute the zero function and see whether it equals to zero.






      share|cite|improve this answer











      $endgroup$


















        1












        $begingroup$

        The simplest way to test whether an equation (here the equation for the boundary conditions) is homogeneous is to substitute the zero function and see whether it equals to zero.






        share|cite|improve this answer











        $endgroup$
















          1












          1








          1





          $begingroup$

          The simplest way to test whether an equation (here the equation for the boundary conditions) is homogeneous is to substitute the zero function and see whether it equals to zero.






          share|cite|improve this answer











          $endgroup$



          The simplest way to test whether an equation (here the equation for the boundary conditions) is homogeneous is to substitute the zero function and see whether it equals to zero.







          share|cite|improve this answer














          share|cite|improve this answer



          share|cite|improve this answer








          edited Dec 13 '18 at 14:40









          LutzL

          58.7k42055




          58.7k42055










          answered Oct 10 '18 at 23:42









          James B. VidalesJames B. Vidales

          191




          191























              0












              $begingroup$

              If your differential equation is homogeneous (it is equal to zero and not some function), for instance, $$frac{d^2y}{dx^2}+4y=0$$ and you were asked to solve the equation given the boundary conditions,
              $$y(x = 0) = 0$$
              $$y(x = 2pi) = 0$$



              Then the boundary conditions above are known as homogenous boundary conditions.



              It is important to remember that when we say homogeneous (or inhomogeneous) we are saying something not only about the differential equation itself but also about the boundary conditions as well.



              Formulation and motivation for this answer have been summarized from Paul's Online Notes






              share|cite|improve this answer









              $endgroup$


















                0












                $begingroup$

                If your differential equation is homogeneous (it is equal to zero and not some function), for instance, $$frac{d^2y}{dx^2}+4y=0$$ and you were asked to solve the equation given the boundary conditions,
                $$y(x = 0) = 0$$
                $$y(x = 2pi) = 0$$



                Then the boundary conditions above are known as homogenous boundary conditions.



                It is important to remember that when we say homogeneous (or inhomogeneous) we are saying something not only about the differential equation itself but also about the boundary conditions as well.



                Formulation and motivation for this answer have been summarized from Paul's Online Notes






                share|cite|improve this answer









                $endgroup$
















                  0












                  0








                  0





                  $begingroup$

                  If your differential equation is homogeneous (it is equal to zero and not some function), for instance, $$frac{d^2y}{dx^2}+4y=0$$ and you were asked to solve the equation given the boundary conditions,
                  $$y(x = 0) = 0$$
                  $$y(x = 2pi) = 0$$



                  Then the boundary conditions above are known as homogenous boundary conditions.



                  It is important to remember that when we say homogeneous (or inhomogeneous) we are saying something not only about the differential equation itself but also about the boundary conditions as well.



                  Formulation and motivation for this answer have been summarized from Paul's Online Notes






                  share|cite|improve this answer









                  $endgroup$



                  If your differential equation is homogeneous (it is equal to zero and not some function), for instance, $$frac{d^2y}{dx^2}+4y=0$$ and you were asked to solve the equation given the boundary conditions,
                  $$y(x = 0) = 0$$
                  $$y(x = 2pi) = 0$$



                  Then the boundary conditions above are known as homogenous boundary conditions.



                  It is important to remember that when we say homogeneous (or inhomogeneous) we are saying something not only about the differential equation itself but also about the boundary conditions as well.



                  Formulation and motivation for this answer have been summarized from Paul's Online Notes







                  share|cite|improve this answer












                  share|cite|improve this answer



                  share|cite|improve this answer










                  answered Feb 1 at 21:26









                  BLAZEBLAZE

                  6,098112756




                  6,098112756






























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