# Rigid Bodies In Game Programming Gems ... A Question

This topic is 4493 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

## Recommended Posts

##### Share on other sites
Okay, it appears that I've found the answer. =P It reads like this:

The limit of d0/dt as t (time) approaches zero is 'w', the angular velocity about the center of mass. As 't' gets closer to, but not equal to, zero, then 'w' gets closer to L, the limit.

Well, that wasn't too difficult was it. LoL. Well, thanks everyone. Sorry I posted this question. I didn't Google it first. I apologize. =P

##### Share on other sites
The question (a bit too late though [smile])

Yeah, lim stands for limit. Since you cannot divide by zero, lim is used when you want to divide by something very very small, but larger than 0 (you can use it for other things, but that's the meaning in this example).

The meaning of the limit you are refering to is simply: if you go a tiny bit forward in time, how much does the angle increase? I.e. what is the speed of the angle.

Gamedev (and general) formating tips

There's some formating tips which you might find useful.

When you do asci art, you can use [code][/code] tags, so it becomes like this:
      (triangle-thing)'0'lim   ------------------- = w (it looks more like a cursive 'w')t->0  (triangle-thing)t

(You can 'Edit' another's post to see the code used in the formatting, which was how I got your limit graphics).

For characters, you can use HTML characters. For instance, the triangle thingy you mention called, 'delta' and can be written:
&Delta;

like so:

Δ

This is a good page for such codes if you know the name of the character.

I'll say this again because it is very useful, if you see fancy layout in a post, just press 'Edit' on the post and you'll see the formating.

##### Share on other sites
Okay, thanks a lot. It may have been a little bit late, but it still helped me understand the meaning even more. Thanks.

Yeah, I've been wondering how people do that formatting, as I've never been able to. LoL. But now I know.

Thanks again,
Matt U.

##### Share on other sites
Take a look at these two main math web-sites:
1. http://en.wikipedia.org/wiki/Limit_(mathematics)
2. http://mathworld.wolfram.com/Limit.html

(Always run a search at wolfram researchs' mathworld web-site and at wikipedia for anything that is math related and new to you!)

Also, Google linked me to these three web-sites which I've found extremely helpful (amongst thousands of other good web-sites):
2. http://www.coolmath.com/limit1.htm
3. http://tutorial.math.lamar.edu/AllBrowsers/2413/Limits.asp

By any means, when you don't know where to look for something on the internet - USE GOOGLE! It's your best friend when it comes to the internet!

(In relation to your needs, use the keywords "math", "limit", "limits", "tutorial", "explanation" in any combination in any search engine.)

Yours greatly, Arie.

1. 1
Rutin
31
2. 2
3. 3
4. 4
5. 5

• 13
• 24
• 11
• 10
• 14
• ### Forum Statistics

• Total Topics
632962
• Total Posts
3009513
• ### Who's Online (See full list)

There are no registered users currently online

×