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Weregoose
Authentic INTJ


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Joined: 25 Nov 2004
Posts: 3976

Posted: 16 Feb 2009 02:46:39 am    Post subject:

Dropped the ball, didn't I?

I think I'll go with what bfr and I came up with on AIM a little under a month ago: not(variance(abs(ΔList(ln(Ans[font="times new roman"]i[font="verdana"]²


Are there any other recommendations, or comments on that one?

That was a commendable run there, Ed H. Thanks. Smile

Last edited by Guest on 11 Jul 2010 06:25:09 pm; edited 1 time in total
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DarkerLine
ceci n'est pas une |


Super Elite (Last Title)


Joined: 04 Nov 2003
Posts: 8328

Posted: 16 Feb 2009 10:46:06 pm    Post subject:

Does the slightly shorter not(variance(abs(ΔList(ln(Ans[font="times new roman"]i also work?

Last edited by Guest on 11 Jul 2010 06:25:34 pm; edited 1 time in total
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Weregoose
Authentic INTJ


Super Elite (Last Title)


Joined: 25 Nov 2004
Posts: 3976

Posted: 16 Feb 2009 11:10:57 pm    Post subject:

Yes, it does—I had forgotten that logarithms are friendly towards negative reals when imaginary numbers are involved. :)

I also think we can use log( now that the base is irrelevant.


Last edited by Guest on 11 Jul 2010 06:24:40 pm; edited 1 time in total
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