Uni drawing and Calculus

[UniDak]

As you all know, unicycling IS an addiction, and a true unicyclist thinks about the sport ALL the time. To prove my addiction to unicycling... and how boring my calculus class is, I submit, for your approval this picture. Go to this address to see what I did today in math.
http://photos.yahoo.com/bc/jfatsmoke...iew=t&.hires=t
-David Kaplan

[UniDak]

Since the edit time has expired, I am adding this comment to my original post: How often do you draw pictures of unis? are they usually ones in production, or fantasy unis?
-David Kaplan

[harper]

Nice graphic. Finally a useful application for a handheld calculator. I have actually watched a person divide 600 by 2 on one of those.

I don't draw pictures of unicycles...just hubs. Hubs with brakes (breaks), get it?

I've always wanted to work unis into my art projects for school. I was able
to do one last year and it went to state in the art contest. No good
projects have come up this year yet.

[UniDak]

Do share. Come on, we will be nice. I wanna see some more of dem dare purdy purdy pictures.
-David Kaplan

"UniDak" <UniDak.p9qa@timelimit.unicyclist.com> wrote in message
news:UniDak.p9qa@timelimit.unicyclist.com...
> unicycling... and how boring my calculus class is,

Calculus is boring? I'm shocked!

[UniDak]

Originally posted by Arnold the Aardvark
Calculus is boring? I'm shocked!

Just incas you are not kidding, imagine having Ben Stein (the guy from ferris bueler's day off) as your teacher. Mine is pretty much the same way.
-David Kaplan

[erike]

What would be really interesting is if you could come up with a series of equations in Cartesian or polar coordinates to plot a unicycle. When I was in high school, I found an equation that plotted a heart. It had something to do with an absolute value +- a square root. The + would plot the two humps of the top of the heart. The - would plot the bottom V of the heart.

The wheel would be simple in polar coordinates. Just radius=1. Then, you could do one of those pretty flowery spirals to do the spokes. Take it from there!

-Erik

[harper]

Originally posted by erike
When I was in high school, I found an equation that plotted a heart.

The function is called a cartioid (guess why).
r=1+cos(n*pi+theta)

[erike]

A cartiod is different from what I'm talking about. BTW, the cartiod is the base shape for the Mandelbrot set. For those who don't know. If you take two circles of the same diameter (2 pennies) and fix one penny so it doesn't move, then take the second one and roll it on the first (so that it rolls around the penny, with the edges touching, both flat on the table), and follow where a fixed edge location goes (lincoln's head), it traces out a cartiod. It's kinda like a butt facing east.

A cartiod is plotted in polar, my heart one was in cartesian. Ah, I'll never remember what it was.

I wonder if the folks at the Unicycle Factory would make a cartiod wheel. They have those silly kangaroo wheels where the axle is off center.

-Erik

[rebecca]

Originally posted by harper
Nice graphic. Finally a useful application for a handheld calculator. I have actually watched a person divide 600 by 2 on one of those.

That's nothing. I tutor at the local community college in an introductory algebra class, and I see people use a calculator to add and multiply by 0 and 1. And of course multiply by powers of ten.

--- harper <harper.r1uq@timelimit.unicyclist.com>
wrote:
>
> erike wrote:
> > When I was in high school, I found an equation
> that plotted a heart.
> >
> >
> >
>
> The function is called a cartioid (guess why).
> r=1+cos(n*pi+theta)
>
>
> --
> harper - Greg Harper: Frequent Faller (oops)
>
> -Greg Harper
>
> "It takes twice the man to ride half the bike (one
> and a half times as
> fast, now)."
>
>
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> harper's Profile:
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> View this thread:
> http://www.unicyclist.com/thread/16631
>


Greg,

Your knowledge amazes me. We learned that in Calc last
semester and I was thinking of replying to the thread,
and then I saw your reply!

Later,



=====
Nick Cegelka

Pyrotechnick13@yahoo.com

NickLikesFire AIM

http://www.extreme.unicyclist.com

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On Tue, 26 Feb 2002 16:26:13 -0600, harper
<harper.pe4o@timelimit.unicyclist.com> wrote:

>I don't draw pictures of unicycles...just hubs. Hubs with brakes
>(breaks), get it?

Harper,
If describing the event that happened in your alpha testing as
"braking" as opposed to "breaking" makes you feel any better, well...
I think it is still an appropriate description of what happened so why
not?

Klaas Bil
--
"To trigger/fool/saturate/overload Echelon, the following has been picked automagically from a database:"
"Taliban, Kalifaatstaat, Gore"

[UniDak]

Originally posted by harper
The function is called a cartioid (guess why).
r=1+cos(n*pi+theta)

Maybe its Because my calculator sucks (or I do), but i keep getting a cosine curve with 2 as the base line and an amplitude of 2. Its probably cause I'm horrible at math, but I would really like to do this thingie. what am I doing wrong?
-David Kaplan

[fred]

UniDak:
Sounds like you are not using polar coordinates.
For more details, look at

http://www.xahlee.org/SpecialPlaneCu....html#Formulas

Have fun,
Fred