Solution 12 to problem l112o23


Expressions | Parameters | Relevance | Back to problem l112o23

Expressions

The solution is given through the following expressions:

      1    2
     ---*a4 *b38
      4
b42=-------------
           2
         a1


     a4*b38
b41=--------
       a1


     2*a4*b38
b40=----------
       a14


          2               1     2   2
      - a1 *a18*a4*b38 + ---*a14 *a4 *b38
                          4
b39=--------------------------------------
                   2
                 a1 *a14*a18


     2*a1*b38
b37=----------
       a14


            2              2
      - 2*a1 *a18*b38 + a14 *a4*b38
b36=--------------------------------
               a1*a14*a18


     a1*b38
b35=--------
      a14


b34=0


b33=0


     a4*b38
b32=--------
      a18


b31=0


b30=0


     a14*b38
b29=---------
       a18


b28=0


b27=0


     a1*b38
b26=--------
      a18


b25=0


b24=0


         1    3
      - ---*a4 *b38
         4
b23=----------------
            3
          a1


          2
      - a4 *b38
b22=------------
          2
        a1


          2       2        1     2   3
      - a1 *a18*a4 *b38 + ---*a14 *a4 *b38
                           2
b21=---------------------------------------
                    3
                  a1 *a14*a18


      - a4*b38
b20=-----------
        a1


             2
     2*a14*a4 *b38
b19=---------------
          2
        a1 *a18


          2               3     2   2
      - a1 *a18*a4*b38 + ---*a14 *a4 *b38
                          4
b18=--------------------------------------
                   2
                 a1 *a14*a18


         2
     2*a4 *b38
b17=-----------
      a1*a18


      3    2
     ---*a4 *b38
      2
b16=-------------
       a1*a18


      3    2
     ---*a4 *b38
      2
b15=-------------
       a1*a18


b14=0


     2*a14*a4*b38
b13=--------------
        a1*a18


     3*a14*a4*b38
b12=--------------
        a1*a18


     3*a4*b38
b11=----------
       a18


     3*a4*b38
b10=----------
       a18


    5*a4*b38
b9=----------
      a18


     3
    ---*a4*b38
     2
b8=------------
       a18


    a1*a4*b38
b7=-----------
     a14*a18


    3*a1*a4*b38
b6=-------------
      a14*a18


b5=0


    3*a14*b38
b4=-----------
       a18


    3*a1*b38
b3=----------
      a18


    3*a1*b38
b2=----------
      a18


      2
    a1 *b38
b1=---------
    a14*a18


      1
     ---*a18*a4
      2
a19=------------
         a1


     2*a1*a18
a17=----------
       a14


            2        1     2
      - 2*a1 *a18 + ---*a14 *a4
                     2
a16=----------------------------
               a1*a14


a15=0


a13=0


a12=0


         1        2
      - ---*a18*a4
         2
a11=----------------
            2
          a1


      - a18*a4
a10=-----------
        a1


     1        2
    ---*a14*a4
     2
a9=-------------
          2
        a1


a8=0


    a14*a4
a7=--------
      a1


    a14*a4
a6=--------
      a1


a5=a4


a3=0


a2=2*a14


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:
 b38,a4,a14,a18,a1

Relevance for the application:

/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\

               3                                2                    2
df(u,t)=(u  *a1  + u *f(v,v)*a1*a14*a4 + 2*u *a1 *a14*u + f(v ,v )*a1 *a4
          2x        x                       x                x  x

                       2       1                       2
          + f(v,v  )*a1 *a4 + ---*f(v,v )*f(v,v)*a14*a4  + f(v,v )*a1*a14*a4*u
                 2x            2       x                        x

             1        3       2         2                2
          - ---*f(v,v) *a18*a4  - f(v,v) *a1*a18*a4*u)/a1
             2

                          2        1               2               2
df(v,t)=( - 2*v *f(v,v)*a1 *a18 + ---*v *f(v,v)*a14 *a4 + v *a1*a14 *u
               x                   2   x                   x

                        2          1        2
          + 2*f(v,v )*a1 *a18*v + ---*f(v,v) *a14*a18*a4*v
                   x               2

          + f(v,v)*a1*a14*a18*u*v)/(a1*a14)

               5        3               3                      4
df(u,s)=(u  *a1 *b38 + ---*u  *f(v,v)*a1 *a14*a4*b38 + 3*u  *a1 *a14*b38*u
          3x            2   2x                            2x

                2   4                          3
          + 3*u  *a1 *a14*b38 + 5*u *f(v,v )*a1 *a14*a4*b38
               x                   x      x

                     2   3               3           2       2   2
          - u *f(v,v) *a1 *a18*a4*b38 + ---*u *f(v,v) *a1*a14 *a4 *b38
             x                           4   x

                          2    2                   3    2      2
          + 3*u *f(v,v)*a1 *a14 *a4*b38*u + 3*u *a1 *a14 *b38*u
               x                               x

                          4           3                    2       2
          + 3*f(v ,v  )*a1 *a4*b38 + ---*f(v ,v )*f(v,v)*a1 *a14*a4 *b38
                 x  2x                2     x  x

                         3                           4
          + 3*f(v ,v )*a1 *a14*a4*b38*u + f(v,v  )*a1 *a4*b38
                 x  x                          3x

             3                    2       2                    3
          + ---*f(v,v  )*f(v,v)*a1 *a14*a4 *b38 + 3*f(v,v  )*a1 *a14*a4*b38*u
             2       2x                                  2x

                     2   2       2                     2   2       2
          + 2*f(v,v ) *a1 *a14*a4 *b38 - f(v,v )*f(v,v) *a1 *a18*a4 *b38
                   x                          x

             1                2    2   3
          + ---*f(v,v )*f(v,v) *a14 *a4 *b38
             2       x

                                   2   2                     2    2         2
          + 2*f(v,v )*f(v,v)*a1*a14 *a4 *b38*u + 2*f(v,v )*a1 *a14 *a4*b38*u
                   x                                    x

             1        4           3             3              2
          - ---*f(v,v) *a14*a18*a4 *b38 - f(v,v) *a1*a14*a18*a4 *b38*u
             4

                  2   2                 2     3
          - f(v,v) *a1 *a14*a18*a4*b38*u )/(a1 *a14*a18)

                 3                       3                          2
df(v,s)=(u *v *a1 *a14*b38 + u *f(v,v)*a1 *a18*b38*v + v *f(v,v )*a1 *a14*a4*b38
          x  x                x                         x      x

                     2   2               1           2    2   2
          - v *f(v,v) *a1 *a18*a4*b38 + ---*v *f(v,v) *a14 *a4 *b38
             x                           4   x

                          3                             2
          - 2*v *f(v,v)*a1 *a18*b38*u + v *f(v,v)*a1*a14 *a4*b38*u
               x                         x

                 2    2      2                      2
          + v *a1 *a14 *b38*u  + 2*f(v,v )*f(v,v)*a1 *a18*a4*b38*v
             x                          x

                        3                1        3           2
          + 2*f(v,v )*a1 *a18*b38*u*v + ---*f(v,v) *a14*a18*a4 *b38*v
                   x                     4

                  2                                  2              2       2
          + f(v,v) *a1*a14*a18*a4*b38*u*v + f(v,v)*a1 *a14*a18*b38*u *v)/(a1

   *a14*a18)