Re: integration approximation demo in bivariat.dem

[James R. V. Z. <jr...@co...>]

Daniel J Sebald <dan...@ie...> wrote:
>   James R. Van Zandt wrote:
>   > Daniel J Sebald <dan...@ie...> wrote:
>   > 
>   >>  Paging through all.dem, something caught my eye in the bivariat.dem demo.  
>   >>  ...
>   >>  The first example is of approximating integration of a function.
>   >>  Unfortunately it appears to be a bad approximation.
>   > 
>   > 
>   > I looked the integration demo some time ago.  Attached are some
>   > suggested changes.  It might be worth while including two versions -
>   > one to show the basic approach, and the other to show possible
>   > refinements that improve the results at the cost of some obscurity.
>
>   Not following what you mean.  Do you mean use a lower order
>   approximation such as trapezoidal to compare against Simpson's
>   rule?

I'm just thinking it would be easier for the user to study the
original program first, then the more sophisticated one.
...
>   Very nice.  Could add a note about the accuracy of the third order
>   Simpson's for approximating a second order function at the sample
>   points, i.e., exact.  Is that the kind of thing you meant?

Yes.

             - Jim Van Zandt