How can I plot a string function?

How can I plot a string function?

[Ameer Hamza]

What is a string function?

Answer 1

[OCDER]

Is this the "string function" ?

StrFunc = 'x.^2+2*b+c';

%Converting to a function handle
Letters = unique(regexp(StrFunc, '[a-zA-Z]+', 'match'));  %Extract the letters
VarPat = ['@(' sprintf('%s,', Letters{1:end-1}) Letters{end} ')']; %'@(a,b,x)'
Func = str2func([VarPat StrFunc]);  % @(b, c, x) x.^2+2*b+c

x = 1:10;
b = 3;
c = 5;
plot(x, Func(b, c, x));