Solve for x in an algebraic equation
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
I would like to solve for x in the following algebraic equation:
syms a b c d x e f g h i
eqn = x-(lambertw(0, e*exp(log(h*exp(h*e)) - (d*c*(f*exp(-(x*d*c*a*b*g)/((a + b)*(x*e + 1))))*a*b*i*g)/(a + b)))/e)==0;
solx = solve(eqn, x)
However, I get:
solx =
Empty sym: 0-by-1
What can I do?
0 Kommentare
Antworten (1)
John D'Errico
am 19 Mär. 2018
Bearbeitet: John D'Errico
am 19 Mär. 2018
You can recognize that it is easy to write an equation that has no analytical solution? In fact, you just did exactly that! Yes, it is true that some problems actually do have an analytical solution, even though it is impossible to solve for it, or even if the symbolic toolbox just gets lost.
The empty solution result tells you that MATLAB was unable to find a solution.
If you have values for all of those parameters, then substitute them so that now your problem involves only x. Then you can use vpasolve or fzero.
0 Kommentare
Siehe auch
Kategorien
Mehr zu Equation Solving finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!