How to get the string form of an anonymous function?

I was thinking about creating a function, which automatically creates plot, data, etc. This function is supposed to be an aid for solving differential equations with numerical methods.

The function is:

function [x,yf,yg]=graphing(f,g,interval)

x = linspace(interval(1),interval(end),80);

yf = f(x);

yg = g(x);

plot(x,yf,'g',x,yg,'b');

tf = 'f(x)=';

tg = 'g(x)=';

legend(tf,tg);

end

And the command could be:

interval = [0 4];

f = @(x) exp(-0.5*x);

g =@(x) sin(2*x);

[x,yf,yg] = graphing(f,g,interval)

There is a way to get the string form of the functional notation for the anonymous function, so that it is possible having in legend the exact function form? It could help me for orientation, even if it is not necessary. Just as a matter of interest.

Thank you in advance.

[Stephen23]

https://www.mathworks.com/help/matlab/ref/func2str.html

Answer 1

[Fangjun Jiang]

f = @(x) exp(-0.5*x);
>> func2str(f)
ans =
    '@(x)exp(-0.5*x)'

Or, provide your string, use str2func()

[Richard]

Thank you, it worked :)