numerical values assignment to symbolic variables

I have defined the following symbols

syms V1 V2 V3 V4 V5 V6 V7 V8 V9

I want to assign numerical values to them. How could I do it ?

[Stephen23]

V1 = sym(3)
class(V1)

ans = 'sym'

V1(1) = 2
class(V1)

ans = 'sym'

Answer 1

[Sameer]

Hi Ajinkya

To assign numerical values to "symbolic variables", you can use the "subs" function

Here's how you can do it:

syms V1 V2 V3 V4 V5 V6 V7 V8 V9
% Define the numerical values
values = [10, 20, 30, 40, 50, 60, 70, 80, 90];
% Substitute the values into the symbolic variables
V_values = subs([V1, V2, V3, V4, V5, V6, V7, V8, V9], [V1, V2, V3, V4, V5, V6, V7, V8, V9], values);
% Display the results
disp(V_values);

Direct Assignment in an Expression

If you are using these variables within an expression, you can substitute them directly:

syms V1 V2 V3 V4 V5 V6 V7 V8 V9
% Example expression
expression = V1 + V2 + V3;
% Substitute values
result = subs(expression, [V1, V2, V3], [10, 20, 30]);
% Display the result
disp(result);

Please refer to the below MathWorks documentation link:

https://www.mathworks.com/help/symbolic/sym.subs.html

Hope this helps!