Do not specify equations and variables as character vectors. Instead, create symbolic variables with syms.

Sure, I understand. Instead of specifying equations and variables as character vectors, you can create symbolic variables using the 'syms' function in MATLAB. This allows you to perform symbolic computations and manipulate algebraic expressions.

For example, instead of writing an equation like 'x + 2 = 5', you can define a symbolic variable 'x' using 'syms x', and then write the equation as 'x + 2 == 5'. This allows MATLAB to treat 'x' as a symbolic variable rather than a character vector.

Here's an example code snippet:

% Create symbolic variables
syms x

% Define an equation
eqn = x + 2 == 5;

% Solve the equation
sol = solve(eqn, x);

% Display the solution
disp(sol);

This will output the solution 'x = 3', indicating that 'x' is equal to 3 in order to satisfy the equation.

Using symbolic variables with 'syms' allows MATLAB to perform symbolic computations, such as solving equations symbolically, finding derivatives, simplifying expressions, and more.