Could I use a function of x as input like this ( fun = input(' Function of x = ');) and then when I run the program insert a function of x ?

Could you give me an example when the input is a function of x rather than a numerical term?

Answer 1

[James Tursa]

E.g., input your function as a MATLAB syntactically correct string, then use the str2func function to form a function handle. E.g.,

>> s = input(' Function of x = ','s')
 Function of x = 2*x+1
s =
2*x+1
>> fun = str2func(['@(x)' s])
fun = 
    @(x)2*x+1
>> fun(1)
ans =
     3
>> fun(2)
ans =
     5
>> fun(3)
ans =
     7