torabi

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3 years, 302 days

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These are replies submitted by torabi

@Preben Alsholm

thanks a lot.i believe  that  for extera boundary condition 

{g(1), s(1), (D(g))(0), (D(g))(1), (D(s))(1), ((D@@2)(s))(0), ((D@@3)(s))(0)}

when we use for example g(1)=b, amount b is very effective on result.. 

result for first omega is correct but for second omega is some away from correct result.i examin this and found that amount b is very effective on result.

due to comment  ''''try using an approximate solution with more wiggles.
approxsoln=[s(x)= something, g(x) = something]'''  

i attach two file that are fist and second result for omega ,which second result for omega has some different with correct result

please see attached file below..

 

first_result_for_omega.mw

second_result_for_omega.mw

@Preben Alsholm 

hi.thanks for your attention.please see attached file that different method such as shooting and perturbation method was used for solving same equation.is possible sove equation with shooting method?

Also_in_the_other_manuscript_the_method_shotting_was_used.pdf

 

@Preben Alsholm 

thanks a lot

first result for omega is correct but another result are same

[0.77274e-1, 0.77468e-1, 0.78051e-1, 0.78216e-1, 0.78701e-1, 0.78835e-1, 0.79218e-1, 0.79320e-1, 0.79596e-1, 0.79665e-1, 0.79832e-1, 0.79866e-1, 0.79922e-1]??

 

@Preben Alsholm 

thanks alot, but these values of omega really dos not different....

@Preben Alsholm thanks alot...

because this problem have many answer for omega2 ,due to eginvalue problem

how i can gain another result for omega2? (or next results for omega2)?

2)how i can apply another bcs such as {{ s(1), (D(g))(0), (D(g))(1), (D(s))(1), ((D@@2)(s))(0), ((D@@3)(s))(0)}} more evere g(1)? are results same for another boundary conditions?

3)what is the reason for using  odetest({s(x) = 0}, sys)  and equal s(x) to zero?

4)how generate this code for another input data for example   the term '''(0.326905829596411e-2)'''   in this line 

0.326905829596411e-2+(4/3)*omega2 = ((1/2)*Pi+n*Pi)^2??

thanks

@Carl Love 

Hi.i need to non trial solution for this equations....

@Markiyan Hirnyk 

thanks 

but i need explicit formulas....

@Markiyan Hirnyk

why? i don't understand jokes!!!!

this result need to a long time.

is there another way to ger result faster?

thanks

@Markiyan Hirnyk 

hi.for gain faster result i  assume that n := 7  and obtain result for two case.

please see two case witch attached as file belowanother_result_(1).mw

another_result_(digite15).mw

@Markiyan Hirnyk

thanks. i tried with 15 digits and will say  you the result ...

@Markiyan Hirnyk 

is another way for gain result faster? may we use another method  such as Runge-Kutta thanks?

this method need to a long time for driving result

@torabi 

is possible any one help to me?

@Markiyan Hirnyk 

The equations and variables are presented as Maple  input in attached file below

solve_nonlinear_governing_equation.mw

@Markiyan Hirnyk 

maple code was reformed...thanks

FSOLVE.mw

@Preben Alsholm 

thanks...

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