how to create symbolic function?

1 次查看（过去 30 天）
Michal
Michal 2017-10-30
评论： Michal 2021-5-9
I need to transform the following function to the symbolic form to evaluate it with arbitrary precision.
Z(N,Thetas) = prod((1 - exp(-(N:-1:2).*Thetas))./(1 - exp(-Thetas)),2)
where Thetas is matrix M x N-1 of the positive real numbers. So the expected result is vector Z (M x 1). I am not able to rewrite function Z to symbolic form and than evaluated it by vpa() command.
Any idea how to effectively solve it?

请先登录，再回答此问题。

采纳的回答

Michal
Michal 2017-10-30
编辑：Michal 2017-10-30
function Z=symZ(N,Thetas,Ndigit)
Thetas = sym(Thetas);
Zsym = prod((1 - exp(-(N:-1:2).*Thetas))./(1 - exp(-Thetas)),2);
Z = vpa(Zsym,Ndigit);
end

更多回答（1 个）

Alfonso Salas-Cruz
how evaluate an symbolic expresion?

类别

在 Help Center 和 File Exchange 中查找有关 Symbolic Math Toolbox 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by