what does this code do? syms x f = exp(x); % function f(x) = exp(x) df = diff(f, x); % calculatet the derivative of f(x) df_value = subs(df, x, 1); % substitute x = 1 in the derivative df_value in matlab

This code performs symbolic computations in MATLAB.

The line syms x declares x as a symbolic variable, allowing us to work with symbolic expressions.

The line f = exp(x) defines a symbolic function f(x) as the exponential function exp(x).

The line df = diff(f, x) calculates the derivative of f(x) with respect to x using the diff function. The result is stored in df.

Finally, the line df_value = subs(df, x, 1) substitutes x = 1 in the derivative df, using the subs function. The value of the derivative at x = 1 is stored in df_value.