How to evaluate a function over a range of inputs

This is probably really easy but i'm new to Matlab and can't figure out the syntax.

Example: F = ((1-n/(1+n))^2 n = [0:15]

Want to evaluate the function (F) for a given (n) is all... How do you set this up in ML?

Answer 1

[Steven Lord]

You will need to use the element-wise or array versions of the division and power operators. See this documentation page for an explanation of the different between the element-wise / array operators and the matrix operators.

As a simple example of the difference, using the times array operator ".*" and the mtimes matrix operator "*":

A = [1 2 3; 4 5 6; 7 8 9]
B = [1 4 7; 2 5 8; 3 6 9]
elementwise = A.*B
matrix = A*B

Answer 2

[Fangjun Jiang]

The OP is probably asking for this

>> F=@(x) ((1-x/(1+x)))^2
F =
  function_handle with value:
    @(x)((1-x/(1+x)))^2
>> F(15)
ans =
    0.0039

More common way is to write the following and save it as F.m then you can call and run F(1)

function out=F(x)
out=((1-x/(1+x)))^2;