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 ?

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Roger Vegeta
Roger Vegeta 2016-7-27
回答： James Tursa 2016-7-27
Could you give me an example when the input is a function of x rather than a numerical term?

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James Tursa
James Tursa 2016-7-27
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

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