Problem identifying a symbolic variable as a double

7 次查看（过去 30 天）
Dina Irofti
Dina Irofti 2014-6-3
回答： Mischa Kim 2014-6-3
Hello!
I’m dealing with symbolic toolbox in Matlab. I have this code:
>> syms a b c;
a = b + c;
>> res = subs(a, {b, c}, {1, 1})
res =
2
>> isnumeric(res)
ans =
0
I would like an “isnumeric” function that returns 1 for this situation. I tried vpa and double but the answer is still 0. There is any other function that I can use or should I write it by myself?
Thanks!

请先登录，再回答此问题。

回答（1 个）

Mischa Kim
Mischa Kim 2014-6-3
Dina, did you try
isnumeric(double(res))
Just in case this does not result in a "1", what MATLAB release are you working with?

类别

在 Help Center 和 File Exchange 中查找有关 Symbolic Variables, Expressions, Functions, and Settings 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by