RE: Integrating a function with many arguments over one varible.

[Billings, Paul]

It's a workaround, but you could define your single-variable function "on
the fly".  Using atan2 as an example for the "real" function of 2 variables:
  y = .5;  % perhaps in a loop?
  f1 = inline(sprintf('atan2(x,%f)', y));
  quad(f,0,1)

Paul


-----Original Message-----
From: address@hidden [mailto:address@hidden
Sent: Friday, August 26, 2005 1:15 AM
To: address@hidden
Subject: Integrating a function with many arguments over one varible.



I need to find the integral of f(x, y1, ..., yn), over the variable x,
between 2 limits. I read that quadl in Matlab can do it simply, you only
have to add the values of the parameters y1, ..., yn at the end, when you
use quadl. I tried to do the same with quad in Octave, but it did not work.

I can't define "by hand" a function g(x) so that g(x) = f(x, y1, ..., yn),
and use quad with g(x), because in fact I need to find the values y1,...,yn
that minimize such quadrature along x.

Can someone help me?

Thank you.



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