[SciPy-User] Finding Multiple Zeros of a Function within Interval

Charles R Harris charlesr.harris@gmail....
Sat Sep 25 20:19:13 CDT 2010

On Sat, Sep 25, 2010 at 6:49 PM, Lorenzo Isella <lorenzo.isella@gmail.com>wrote:

> Dear All,
> I am looking for an algorithm able to find the (possibly more than one)
> zeros of a nonlinear function f(x,y,z) for x in [a,b] (maybe bad
> notation: let us say that y and z act as parameters since the only
> variable I can really tune is x) which does not require f(a)f(b)<0.
> I had a look at the optimization module in scipy, but it seems to be
> that most of the functions would return the first zero they can find and
> then stop.
> Any suggestion is really appreciated.
> Cheers
What does the function look like? One quick way if y and z are given is to
fit the function with a Chebyshev series and use the zeros of that.

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