Is there a way to display variables followed by numerical solution in the Command Window?

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Sam
Sam 2022-10-6
回答： Umang Pandey 2024-10-29，9:27
Apologies in advance if this has been covered by other posts, or is very simple problem; I am very new to Matlab but have not been able to find any topics that speak on this fully. In my editior, I'm trying to have variables displayed as a formula before solving for the numerical value in the Command Window when I run my script.
Example:
a = 10
b = 5
k = a + b
where after running I would like the line containing 'k' in the Command Windows to show "k = a + b = 15" or anything similar to that. Right now it simply displays:
"k =
15"
This would allow for debugging and to follow along with large complex formulas in my work moving forward rather than simply a numerical value. It would be fine if it even needed to be done in two lines where I have a line that displays 'k' symbolically, then another line that displays 'k' as a numical solution. I've played around with 'syms a b' but am not sure that's the right approach and cannot get a numerical solution later on. Any help or direction that could point me achieving something simliar to this would be very appreciated.

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回答（1 个）

Umang Pandey
Umang Pandey 2024-10-29，9:27
Hi Sam,
If your goal is to compute values based on certain expressions, I recommend using a MATLAB script or live script. This approach can simplify formulating your problem and make tasks like debugging, maintaining, and modifying your code more straightforward.
However, if you have a specific use case for working directly in the Command Window that I might not fully understand, you can achieve this by creating separate variables: one for the symbolic expression and another for its numeric value. This method allows you to verify expressions whenever you encounter unexpected values. Here is a demonstration of this approach:
syms a b
a_value = 10;
b_value = 5;
k_expression = "a + b";
k = a_value + b_value;
displayFormula(k_expression)
For more details on creating symbolic expressions, refer to the following MATLAB documentation:
Best,
Umang

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