Prev: Looking to solve PDE on an annulus?
Next: ListContourPlot3D
From: DrMajorBob on 25 Mar 2010 05:23
If it's negative, increasing, and goes to zero at Infinity... it has no
roots.

Bobby

On Wed, 24 Mar 2010 05:03:00 -0500, guerom00 <guerom00(a)gmail.com> wrote:

> FindInstance[] doesn't help...
> For what it's worse, I know how my function f(x) behaves. It is always
> negative, increasing and goes to zero when x goes to infinity.
> A kind of root finding method based on the bisection method e.g.
> should do the trick...
>


--
DrMajorBob(a)yahoo.com

From: guerom00 on 25 Mar 2010 05:22
I find that :
- Calculate a table of values of my function f(x) on a regular grid of
x which bracket the root I want
- Interpolation[] of this table of values
- Use FindRoot[] on this interpolated function
gives me a good compromise (speed/accuracy) :)

Thanks

First  |  Prev  | 
Pages: 1 2
Prev: Looking to solve PDE on an annulus?
Next: ListContourPlot3D