[Year 12 SofDev] RE: programming and maths

Thu Nov 20 08:26:40 EST 2008

Looks a bit like a Mandelbrot.
I wrote one in basic around 1987
on an IBM PC.  It took 13 hours.
Later I wrote one in C and it took about
5 min.  Faster platform of course but
you really want a fully compiled 
executable.  Then around 2008 I
wrote one in C for a digital UNIX
box and it took no time at all.

Russell Quinn

Mailto: qn at boxhillhs.vic.edu.au

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Subject: sofdev Digest, Vol 45, Issue 12

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Today's Topics:

   1. programming and maths (Maggie Iaquinto)
   2. Exam  (Mark Kelly)
   3. Re: Exam (Mark Kelly)
   4. RE: Exam (Quentin Lydall)

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Message: 1
Date: Wed, 19 Nov 2008 10:40:58 +1100
From: "Maggie Iaquinto" <IAQUIM at bialik.vic.edu.au>
Subject: [Year 12 SofDev] programming and maths
To: <vbasic at edulists.com.au>, <php at edulists.com.au>,
	<sofdev at edulists.com.au>
Cc: greyruin at gdurkin.com
Message-ID:
	<C12A0D9E0ADEB241AF23E0772E9B3275D71647 at bialik-dc2.bialik.vic.edu.au>
Content-Type: text/plain; charset="us-ascii"

One of our maths teachers is looking for a programming solution to the
following. Any ideas which language is best for this? Anyone willing to
give it a go?

Maggie

The task is to display successive iterations of z-> z2 +c where z = x+iy
and  i is the square root of -1 and c is a complex constant.

In particular I want to be able to preset the number of iterations for a
given initial value of z (called z(0)) and a fixed (but user selectable)
value of c. I'm thinking of a maximum of 1000.

I want to see a display of the iterates in a list and a plot on the
Argand diagram of each iterate joined to the previous iterate with a
line. I want a unit circle fixed on the display . I want to be able to
show other circles as user defined. I want to be able to show the Argand
diagram with user defined min and max values of Re(z) and Im(z).

I would like a reset button to initialise everything. Ideally a zoom in
and zoom out feature would be good too.

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Message: 2
Date: Wed, 19 Nov 2008 11:12:33 +1100
From: Mark Kelly <kel at mckinnonsc.vic.edu.au>
Subject: [Year 12 SofDev] Exam 
To: "Year 12 Software Development Teachers' Mailing List"
	<sofdev at edulists.com.au>
Message-ID: <492359F1.5090001 at mckinnonsc.vic.edu.au>
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Hi all.  I'm playing with a post mortem.

Section C, Q5a(ii)

My answer would be: Pattie.

Did others get the same?  I've since looked at Kevin's sample solution 
but I disagree with his stepping through of the algorithm's workings.

Regards
Mark

-- 
Mark Kelly
Manager - Information Systems
McKinnon Secondary College
McKinnon Rd McKinnon 3204, Victoria, Australia
Direct line / Voicemail: 8520 9085
School Phone +613 8520 9000
School Fax +613 9578 9253
kel at mckinnonsc.vic.edu.au

Webmaster - http://www.mckinnonsc.vic.edu.au
IT Lecture notes: http://vceit.com
Moderator: IT Applications Mailing List

Most people don't realise that small kitchen sponges, when nailed to the 
forehead, can really REALLY hurt.

------------------------------

Message: 3
Date: Wed, 19 Nov 2008 11:23:46 +1100
From: Mark Kelly <kel at mckinnonsc.vic.edu.au>
Subject: Re: [Year 12 SofDev] Exam
To: "Year 12 Software Development Teachers' Mailing List"
	<sofdev at edulists.com.au>
Message-ID: <49235C92.4040909 at mckinnonsc.vic.edu.au>
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Forget what I said  :-(

Good ol' Kevin's right...  :-)

Mark Kelly wrote:
> Hi all.  I'm playing with a post mortem.
> 
> Section C, Q5a(ii)
> 
> My answer would be: Pattie.
> 
> Did others get the same?  I've since looked at Kevin's sample solution 
> but I disagree with his stepping through of the algorithm's workings.
> 
> Regards
> Mark
> 

-- 
Mark Kelly
Manager - Information Systems
McKinnon Secondary College
McKinnon Rd McKinnon 3204, Victoria, Australia
Direct line / Voicemail: 8520 9085
School Phone +613 8520 9000
School Fax +613 9578 9253
kel at mckinnonsc.vic.edu.au

Webmaster - http://www.mckinnonsc.vic.edu.au
IT Lecture notes: http://vceit.com
Moderator: IT Applications Mailing List

Most people don't realise that small kitchen sponges, when nailed to the 
forehead, can really REALLY hurt.

------------------------------

Message: 4
Date: Wed, 19 Nov 2008 11:40:11 +1100
From: "Quentin Lydall" <qly at beaconhills.vic.edu.au>
Subject: RE: [Year 12 SofDev] Exam
To: "Year 12 Software Development Teachers' Mailing List"
	<sofdev at edulists.com.au>
Message-ID:
	<AFC3563D81D1044097735D5F6A3DBBE50151CD6A at valley02.Beaconhills.beaconhills.vic.edu.au>

Content-Type: text/plain;	charset="utf-8"

Sec C Q5 ii: Because it initialises Count_Coordinator to 1 then increments it first thing in REPEAT, it has to be Charles.

Quentin Lydall
Head of ICT
Beaconhills College Valley Campus
30-34 Toomuc Valley Road,
Pakenham
3810
Phone: 1300 002 225 Extn 3016
? Please consider the environment before printing my email

-----Original Message-----
From: sofdev-bounces at edulists.com.au [mailto:sofdev-bounces at edulists.com.au] On Behalf Of Mark Kelly
Sent: Wednesday, 19 November 2008 11:24 AM
To: Year 12 Software Development Teachers' Mailing List
Subject: Re: [Year 12 SofDev] Exam

Forget what I said  :-(

Good ol' Kevin's right...  :-)

Mark Kelly wrote:
> Hi all.  I'm playing with a post mortem.
> 
> Section C, Q5a(ii)
> 
> My answer would be: Pattie.
> 
> Did others get the same?  I've since looked at Kevin's sample solution 
> but I disagree with his stepping through of the algorithm's workings.
> 
> Regards
> Mark
> 

-- 
Mark Kelly
Manager - Information Systems
McKinnon Secondary College
McKinnon Rd McKinnon 3204, Victoria, Australia
Direct line / Voicemail: 8520 9085
School Phone +613 8520 9000
School Fax +613 9578 9253
kel at mckinnonsc.vic.edu.au

Webmaster - http://www.mckinnonsc.vic.edu.au
IT Lecture notes: http://vceit.com
Moderator: IT Applications Mailing List

Most people don't realise that small kitchen sponges, when nailed to the 
forehead, can really REALLY hurt.

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