question about simplification in Maxima

from Jerome Huck


Sir,
Is there a way to forward my question to developer of Maxima.

Thanks in advance.

Best regards.

Hi.
I did drop sometimes the useof Maxima but with the release of a version
foe the Nexus 7, it is fun to be able to rethink some past problems...
related to hyperbolic functions in Maxima with this new portable device.

So, I was trying to solve a 2nd oder pde :

load(scifac);

eq: 'diff(u,z,2)-Ha^2*u-Re*Px+K*Ha^2 = 0;
sol : ode2(eq,u,z);
solution : bc2(sol,z=-1.0,u=0.0,z=1.0,u=0.0);

combine(solution);
gcfac(%);
subst(%i*z,z,%);
demoivre(%);
subst(z/%i,z,%);

With that, I have nearly the canonical expected solution with hyperbolic
function... But I guess I can find a better and quicker solution with
Maxima, just some more time to experiment...

The question, I have, is for the first steps of the
resolution(solution). I ended with exp functions with +1 or -1 times
something... Is there a clever way to simplify the result?

eq: 'diff(u,z,2)-Ha^2*u-Re*Px+K*Ha^2 = 0;
sol : ode2(eq,u,z);
solution : bc2(sol,z=-1.0,u=0.0,z=1.0,u=0.0);

Thanks for your answer.

best regards.

Jerome Huck.