MaplePrimes - answers and comments on Question, how i make the code for that problem!!??

Re

Kitonum — Fri, 25 Jan 2013 01:35:22 Z

What means your dual equality? The system of equations? If only the first equation is acceptable and from the boundary conditions to retain only the first two, Maple finds the only one trivial solution. Assuming that Maple was right, the initial boundary value problem has no solution.

dsolve({(diff(f(x), x))^2-f(x)*(diff(f(x), x, x)) = diff(f(x), x, x, x)-100*(diff(f(x), x))-0.001*(2*(diff(f(x), x))*(diff(f(x), x, x, x))-f(x)*(diff(f(x), x, x, x, x))-(diff(f(x), x, x))^2), f(0) = 0, ((D@@2)(f))(0) = 0}, f(x));

f(x)=0

!!!

memli — Fri, 25 Jan 2013 02:29:42 Z

this equation is for 'Flow and heat transfer of a MHD viscoelastic ﬂuid in a channel
with stretching walls' and had solution!!

i know with using numerical methods like Perturbation method and finite difference method it had solution and had plot like this:

but i want the code of solution.

Re

Kitonum — Fri, 25 Jan 2013 03:43:45 Z

Check the specification of your equation!

You also did not answer these questions: "What means your dual equality? The system of equations?"

Sorry

memli — Fri, 25 Jan 2013 04:14:53 Z

@Kitonum

sorry !! not =0 !

{f'(x)}^2 - f(x)f''(x) = f'''(x) - 100 * f'(x) - 0.001 * [2 * f'(x) * f'''(x) - f(x) * f''''(x) - {f''(x)}^2]