MATLAB: Matlab says the inline function will be removed in future release how should i execute a string function like ‘2*x.^2+5’

Question

function

Answer 1

Use Anonymous Functions (link).

Your function becomes:

fcn = @(x) 2*x.^2+5;

the call it as you would any other function:

y = fcn(x);

To convert a string to a function, use the str2func (link) function:

str = '2*x.^2+5';
fun = str2func(['@(x) ',str]);
y = fun(x);

This creates the anonymous function from the string, and returns a function handle.