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List:       kde-edu-devel
Subject:    Re: [kde-edu-devel] First Announcement Of KMathCenter
From:       dominique devriese <fritmebufstek () pandora ! be>
Date:       2002-04-30 9:59:20
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Op dinsdag 30 april 2002 11:12, schreef Christian Parpart:
> And exactly that's what I want. Tell me what derive is doing and what
> you're missing here. So I'm going to implement it as soon as the time is
> much :) 

Well, derive basically lets you define functions, and then lets you do all 
sorts of things with them (maybe you could add that: your prog seems to let 
the user input functions individually for every dialog...
1) plot them (you already have that)
2) integrate and derive them (you have deriving)
3) solve them (find the values of x for which the function reaches 0) (you 
don't seem to have that :)

Frankly, i don't think derive is easy to use, though... If we have a math 
class on the computer, our first few minutes are always the teacher trying to 
explain how to operate derive, and next, he walks around telling students 
what buttons to push..
In this respect, your prog seems much better: maybe you could make it even 
easier: make "discuss a function" a wizard, which lets the user input what he 
wants to know about the function, and then provide a tabbed dialog with all 
the information (just an idea...)

I think derive also supports working with matrices and such (i think this 
should prove really easy if you're wanting to implement: doesn't boost 
(www.boost.org) have a matrix class?)

> I unfortunately can't image what you mean with "interactive". Tell
> it me. 
No, that was about Kig, my prog: it lets you draw objects (circles, lines..., 
(soon locuses)), and then lets you move one or more of them, and see the 
effect on the others...
> BTW: KMathCenter supports functions like IF() and self recursions
> wich make it even possible to calculate or plot the signum function, abs
> etc.

an interesting program for you might be maxima: 
http://www.ma.utexas.edu/maxima.html
it's a program like yours, written in emacs lisp, it has some more cool 
features like 3d plotting and such...
it's not user friendly at all though

domi
ps: i've currently got lots of work to do on my own prog, but if i find some 
time, maybe i'll take a look at your code and fix some bugs or something...
pps: i think your prog is a great idea, and from what i see, it looks quite 
good already... keep up the good work :)
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