solve nasty expr

delta7 — Sat, 08 Nov 2008 18:29:00 Z

With e. g. assume(alpha::positive): you can tell Maple that your parameters have to be positive.

In this case, Maple apparently can't give symbolic solutions even with these assumptions.
If you provide numeric values for alpha, kappa etc, you can plot it and find numeric solutions with fsolve (plotting helps to give the initial point).

Example (without thinking of whether the parameters are realistic)

expr:=eval(eq,{alpha=1,kappa[B]=7,kappa=3,mu=4,mu[B]=1});
plot(eq1,eta=0..1);

fsolve(expr);
                                  0.

fsolve(expr,eta=0.9);
                             0.9487214131

MaplePrimes - answers and comments on Question, Limiting MAPLE to solve for ONLY relevant roots for a very nasty characteristic eq. that has MANY roots

solve nasty expr