Solution 2 to problem l112o12


Expressions | Parameters | Relevance | Back to problem l112o12

Expressions

The solution is given through the following expressions:

        a5*a8*b7
b19=-----------------
     a3*a4 - 2*a3*a8


     a8*b7
b18=-------
      a3


       a8*b7
b17=-----------
     a4 - 2*a8


b16=0


                  2
         - 2*a4*a8 *b7
b15=-----------------------
     a3*a4*a5 - 2*a3*a5*a8


b14=0


         a4*a8*b7
b13=-------------------
     2*a4*a5 - 4*a5*a8


b12=0


           2
         a5 *b7
b11=-----------------
     a3*a4 - 2*a3*a8


     a5*b7
b10=-------
      a3


     3*a5*b7
b9=-----------
    a4 - 2*a8


      - 2*a4*a8*b7
b8=-----------------
    a3*a4 - 2*a3*a8


    a4*b7 - a8*b7
b6=---------------
      a4 - 2*a8


       a3*b7
b5=-------------
    2*a4 - 4*a8


       a3*b7
b4=-------------
    2*a4 - 4*a8


b3=0


      - 2*a4*a8*b7
b2=-----------------
    a4*a5 - 2*a5*a8


a2=0


    a3*a4
a0=-------
    2*a5


    a4*a8
a7=-------
     a5


        a3*a4*b7
b1=-------------------
    4*a4*a5 - 8*a5*a8


Parameters

Apart from the condition that they must not vanish to give a non-trivial solution and a non-singular solution with non-vanishing denominators, the following parameters are free:
 b7, a5, a8, a4, a3

Relevance for the application:

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df(u,t)=

  1                                              2   2
 ---*u *a3*a4 + u *a5*a6 + f(v,v )*a3*a5 + f(v,v) *a5  + f(v,v)*a4*a5*u
  2   x          x              x
------------------------------------------------------------------------
                                   a5

         v *a5*a6 + f(v,v)*a5*a8*v + a4*a8*u*v
          x
df(v,t)=---------------------------------------
                          a5

          1        2
df(u,s)=(---*u  *a3 *a4*b7 + u *f(v,v)*a3*a4*a5*b7 - u *f(v,v)*a3*a5*a8*b7
          4   2x              x                       x

                                  1             2
          - 2*u *a3*a4*a8*b7*u + ---*f(v ,v )*a3 *a5*b7
               x                  2     x  x

             1             2                               2
          + ---*f(v,v  )*a3 *a5*b7 + 3*f(v,v )*f(v,v)*a3*a5 *b7
             2       2x                     x

                                                                    3   3
          + f(v,v )*a3*a4*a5*b7*u - 2*f(v,v )*a3*a5*a8*b7*u + f(v,v) *a5 *b7
                 x                         x

                  2      2                2   2
          + f(v,v) *a4*a5 *b7*u - 2*f(v,v) *a5 *a8*b7*u

                                  2
          - 2*f(v,v)*a4*a5*a8*b7*u )/(a3*a4*a5 - 2*a3*a5*a8)

          1                                                   2   2
df(v,s)=(---*u *a3*a4*a8*b7*v + f(v,v )*a3*a5*a8*b7*v + f(v,v) *a5 *a8*b7*v
          2   x                      x

                                                   2                 2     2
          + f(v,v)*a4*a5*a8*b7*u*v - 2*f(v,v)*a5*a8 *b7*u*v - 2*a4*a8 *b7*u *v)

/(a3*a4*a5 - 2*a3*a5*a8)