Problem identifying a symbolic variable as a double

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!

Answer 1

[Mischa Kim]

Dina, did you try

 isnumeric(double(res))

Just in case this does not result in a "1", what MATLAB release are you working with?