getting (only) the 3th output argument

[Martijn]

Hi,
I would like to perform an integration on the third/fourth output
argument of an existing function with several in- and output variables:

[y1, y2, y3] = f(x1, x2, x3)
int y3(dx3)

the multiple input variable part is easily solved usin an anonymous
function.

Is there a function that returns the n-th output variable of function
with multiple output variables?
Or do I have to write a wrapper function like

function y3=F(x3)
  [y1, y2, y3] = f(x1, x2, x3)
end

Bye,

Martijn