How do I improve solving 18 second order system of algebraic equations in fsolve ?
1 次查看(过去 30 天)
显示 更早的评论
Hi All
trying to solve 18 nonlinear (2nd order)equations using fsolve I get : possibility of inacuaracy in the results. while I have used the options like : 1e6 iterations plus 1e-5 solution tolerance.
this is the options setting :
options = optimoptions(@fsolve,'Display','iter','MaxFunEvals',1e6,'MaxIter',1e6,'TolFun',1e-6,'DerivativeCheck','on','Diagnostics','on');
and this is the error I get
Equation solved, inaccuracy possible.
The vector of function values is near zero, as measured by the default value
of the function tolerance. However, the last step was ineffective.
<stopping criteria details>
is there a way to improve it ?
10 个评论
Walter Roberson
2020-3-8
Can you post the equations, together with representative values of any constants they require?
回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Equation Solving 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!