Arbitrary sized function evaluation

x is an n-dimensional vector, and f is a function which takes in n variables. Is there a way to dynamically evaluate f so that the number of variables does need to be pre-specified? For example, I would like a single piece of code where if n equal three, would give me f(x(1), x(2), x(3)), and if n = 4, would give me f(x(1), x(2), x(3), x(4)). Any help on this matter would be greatly appreciated.

Answer 1

[Walter Roberson]

xt = num2cell(x);
f(xt{:});

Answer 2

[Jan]

This calls the function f with n scalar elements:

a = 1:4;
c = mat2cell(a, 1, ones(1, length(a)));
y = f(c{:});

Usually it is easier to let the function handle a vector as input. See e.g. sin:

y = sin(1:4)

Then y is a vector also. -Yes, I know this is trivial. But sometimes a programming problem is such impressing, that the programmer forgets the basics.