Error that X is used but not initalized.

My super simply Live script code

"

syms I

O(I)=14.6*10^(-3)*I

"

Output:

Warning: Uninitialized variable 'x' is used.

Bruh, i dont have an X in sight..... Maple>>matlab

Answer 1

[VBBV]

syms I
O = 14.6*10^(-3)*I   % define this way

O = 

O(I) = 14.6*10^(-3)*I

Warning: Uninitialized variable 'x' is used.

O(I) = 

[VBBV]

Possibly due to assigning symoblic variables as function of implicitly defined variables

Answer 2

[Sibghat]

One possible explanation to the error message could be that MATLAB is interpreting 'I' as 'x'. You don't need to define O(I) as you would in a symbolic math toolbox. Instead, you can define O as a function of I.

syms I
O(I) = 14.6 * 10^(-3) * I

Warning: Uninitialized variable 'x' is used.

O(I) = 

O = 14.6 * 10^(-3) * I

O = 

PS: I read somewhere that MATLAB interprets undefined variable as 'x' by default in symbolic expressions. So, perhaps when you're defining O(I), MATLAB interprets it as O(x). However, I'd need to confirm that to be certain...