syms f(x) in matlab

To create a symbolic function f(x) in MATLAB, you need to use the syms command. Here's an example code:

main.m
syms x
f(x) = x^2 + 2*x + 1;
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This code creates a symbolic variable x using the syms command, and then defines a symbolic function f(x) using this variable. The function f is defined as x^2 + 2*x + 1.

You can then use this function f in subsequent calculations, or manipulate it as needed using MATLAB's symbolic toolbox.