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Mokusko

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10 years, 58 days
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These are replies submitted by Mokusko

thanks...

Mokusko 10
June 03 2015
0 0

@Carl Love 

thanks a lot for your answer, it's really helpful for me

how to solve it...

Mokusko 10
May 05 2015
0 0

@tomleslie 

Thank for your advice. I'm agreeing with all what you had wrote in your post. The second bullet is all true, and I see this problem, but I don't know how to solve it.

a classic worksheet code...

Mokusko 10
May 05 2015
0 0

@ NULL

> 

restart
> 

alpha := .3;

.3

  

3.5

  

6

  

1.1

 (1)
> 

for i to 50 do IC := x(z)+y[i](z); ICon := x(0) = 1, y[i](0) = 0; for j to 50 do if i <> j then d1 := diff(x(z), z) = -G*x(z)*y[i](z)/IC-alpha*x(z); d2 := diff(y[i](z), z) = G*y[i](z)*y[j](z)/IC-alpha*y[i](z); dsys := {d1, d2}; F := dsolve({ICon, op(dsys)}, [x(z), y[i](z)], numeric) end if end do end do

Error, (in dsolve/numeric/process_input) unknown y[2] present in ODE system is not a specified dependent variable or evaluatable procedure

  
> 

``


But I don't need to solve y[j](z) from this equations. I just need to find x(z), y[i](z), it is in dsolve. y[j](z) is helping to take into consideration an interaction between y[i](z) with different indecies.

If finding some analytic solution is impossible, then I need just to plot this solution like a graph.

Download 05.mw

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