# matlab symbolic set value

To set a value in MATLAB using symbolic variables, you can use the `subs`

function. The `subs`

function substitutes a value for a symbolic variable in an expression. Here's an example:

```
syms x;
expr = x^2 + 3*x + 2;
value = 5;
result = subs(expr, x, value);
```

In this example, we define a symbolic variable `x`

using the `syms`

function. Then, we define an expression `expr`

that uses the symbolic variable. We want to substitute the value `5`

for `x`

in the expression, so we use the `subs`

function. The result will be stored in the variable `result`

.

Please note that the `subs`

function only works with symbolic variables. If you want to substitute values in a regular MATLAB variable, you can simply assign the value directly. For example:

```
x = 5;
```

I hope this helps! Let me know if you have any further questions.