Error that X is used but not initalized.

2 次查看（过去 30 天）
Zayin Jarrez
Zayin Jarrez 2024-3-4
回答： Sibghat 2024-3-4
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

请先登录，再回答此问题。

回答（2 个）

VBBV
VBBV 2024-3-4
Ran in:
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) = 
  1 个评论
VBBV
VBBV 2024-3-4
Possibly due to assigning symoblic variables as function of implicitly defined variables

请先登录，再进行评论。

Sibghat
Sibghat 2024-3-4
Ran in:
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...

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


版本

R2023b

Community Treasure Hunt

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

Start Hunting!

Translated by