You can see an animation, courtesy of David Little, Penn State
University at
http://www.math.psu.edu/dlittle/java/parametricequations/spirograph/inde
x.html
Click on the box at the bottom of the web page and set the parameters to
e.g. 60, 20, 20, 100, 1
then click "Clear" and "Draw".
Kind regards
Stephen
-----Original Message-----
From: email list for Radical Statistics [mailto:[log in to unmask]]
On Behalf Of Ted Harding
Sent: 16 June 2011 16:13
To: [log in to unmask]
Subject: Re: Oh those exam questions!
Spot on, John! (In my view of it anyway ... ).
This must be one of the fastest-running threads ever: 23 messages
(including this one) in 5 hours.
Ted.
On 16-Jun-11 15:07:28, John Whittington wrote:
> Well, I think I've now got in sorted out in my head! Do we therefore
> now all agree that
>
> (a) 'my' definition of 'a revolution' (360 degrees) is actually the
> right
> one to use
> and
> (b) using that definition, the answer should be '4'?
>
> If that's the case, I guess that (as has been suggested) the problem
> probably arose because, somewhere along the line, either explicitly or
> subconsciously, someone involved in designing the question 'mis-typed'
> a
> decimal point, instead of a comma, between the '4' and '5' in the list
> of
> answers.
>
> Kind Regards,
>
> John
>
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Date: 16-Jun-11 Time: 16:13:11
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