differentiation

Is there any Good library for solving differentiation equations using differentiation operator?

Good library for solving differentiation equations (not only 1rst order) using differentiation operator?Better written in C/C++/PHP/C#/Actionscript/Javascript ...

Derivative Calculator

Hi! I'm interested in building a derivative calculator. I've racked my brains over solving the problem, but I haven't found a right solution at all. May you have a hint how to start? Thanks I'm sorry! I clearly want to make symbolic differentiation. Let's say you have the function f(x) = x^3 + 2x^2 + x I want to display the derivative...

Accessing parameters in a webservice from a different application.

Hi, I have C# webservice webmethods hosted on a server and accessed by different applications(web,winforms etc). Is there any way i can detect that these parameters are sent from winforms, these are from webservices on a webservice? All they do is adding a web reference and passing parameters, i wish to see in my end what parameters t...

Differentiating update of entries (business logic objects)

Hello, The situation I'm facing is as follows: There are large number of 'flat' files from which data is extracted by a C# app in order to create entries which are in turn written in a database (MS SQL server). A full release of the database comprises of ~ 97 million entries across 220 GB. The task is to create a differential update ...

Multi-touch detecting & differentiating - Cocos2d for iPhone

I would like to know how to detect and differentiate between touches in a multi-touch view. I have read about a "hash" code, but I don't understand how to use it. I want to know when two of my Sprites are touched at the same time, like as if pressing a chord on two keys of a piano. [EDIT] Here is an example of what I have for my ccTou...