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Creating a general function handle

by mikeph
Tags: creating, function, handle
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Aug9-11, 09:04 AM
P: 1,212
I'm writing a MATLAB function m-file which has input argument of some N-by-1 vector.

Say this vector is [1,2,3].

I want to create a function handle representing a sum of x taken to the power of each number that appears in the vector, so in this case it is:

f = @(x) [x^1 + x^2 + x^3]; (x scalar)

The point is, I don't know how to define f when I don't explicitly know what the input vector is. Can anyone help me generate a general function handle? The trick is because N is variable.
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Aug9-11, 02:32 PM
Sci Advisor
P: 2,751

f = @(x) sum(x.^v)
Aug10-11, 03:18 AM
P: 1,212
I like it! Thanks very much

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