My formula didnt work

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Saleh d

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Nov 25, 2012, 9:35:57 AM11/25/12
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hello every body,

try this nice formula:
1/(Z^2+C)+Z-1/Z^2

but this one wouldn't work:
1/(Z^2+C)+Z-1/Z^2+c

Thanks for any help
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Rabelais

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Jul 22, 2014, 9:21:59 PM7/22/14
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Yes nice formula.....and the 2nd is a well formed string, but crashes. Try (1/(Z^2+C)+Z-1/Z^2)+c, which should be mathematically identical but does not crash - see my obs regarding brackets. I think there's something buggy about the equation parsing. I don't speak C so haven't really looked at the source code properly :-(  
1/(Z^2+C)+Z-1/Z^(2+c) is very nice (-:

Rabelais

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Jul 22, 2014, 9:37:43 PM7/22/14
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Haha load this one!

Saleh.xpf

jmc...@gmail.com

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Feb 5, 2015, 1:01:10 PM2/5/15
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I am new to fractals and Xaos. Have tried entering various formulae including all on this thread that were recommended, but Xaos crashes continually. Any advise??

On Tuesday, July 22, 2014 at 6:37:43 PM UTC-7, Rabelais wrote:

Haha load this one!

Rabelais

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Feb 8, 2015, 4:51:56 PM2/8/15
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Hi, does Xaos work ok when you fire it up with the built in default formula  : Z^2+C ?  And is it ok with the other built in ones : Fractal>Formulae>Mbrot, Newton, Barnsley etc?
Does it crash whatever you put in the User Formula field? Try sthg simple like Z^3+C or Z^2.1+C.  Do they work?
Remember when you input a formula manually that brackets must be exactly as written. Xaos will either crash or just ignore what you entered if it's not well formed. It doesn't care about upper or lower case for z & c
Some nice Xaos stuff here https://www.flickr.com/groups/1094838@N24/
Let us know how you get on
Geoff

Saleh DP

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Feb 9, 2015, 3:41:57 AM2/9/15
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Thank you very much.
And can you help me to use the described operation logCN which it says: "logCN (base, z) - logarithm of base CN (where CN is complex) " by an example.

By the way, I'm trying to transform my earlier formulas from XaoS into Ultra Fractal to get them in their best graphic form, but it seems the bailout method works differently in Windows version of XaoS and Ultra Fractal, which i guess thats because XaoS do calculate the imaginary and real part, one as current sequence, and the other from previous one, which do well for most of formulas, and i think it can be fix by modifying bailout in Ultra fractal.

Best Regards, Saleh

Rabelais

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Feb 9, 2015, 9:14:39 PM2/9/15
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Hi Saleh,
I've tried to implement the complex log function and it will not work for me!
According to the help page it should be in the form: logCN({r,i},z)  where {r,i} is the complex base so I tried z^logCN({3;2},z) +c   and Xaos crashes.  I've tried adding extra brackets to no effect.  So I'm afraid I can't help with this.
I'm not familiar with Ultra Fractal but have downloaded evaluation copy to play with.  When I wrote my own Mandy generator, for the bailout I just said if the magnitude of Z  [that is sqrt(r²+i²) ] is greater than 2 then it's escaping to infinity!
If Complex.Abs(Znew) > 2 Then Exit Do  (visual basic)
The program worked fine, it was very slow though.  My maths is not very good - I did half a degree in pure maths as part of a chemistry degree but so long ago I've forgotten most of it
Keep banging the rocks together!
Geoff

Saleh DP

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Feb 10, 2015, 1:31:42 AM2/10/15
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Hi Geoff,
Thank you, now i know I'm not the only one who find no way to use it. And i haven't found an example for it among formulas that i could find by searching.

Nice talk by the way, and i still love XaoS! ;)
https://www.flickr.com/photos/sevenx/16179750999/
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