convert to scientific notation

[Terry Judd]

Not if you log transform your age first.


On 21/04/09 11:51 AM, "Randall Reetz" <randall at randallreetz.com> wrote:

> World changing.  Too bad i am too old for a "Fields" prize nomination.
> 
> -----Original Message-----
> From: "Terry Judd" <tsj at unimelb.edu.au>
> To: "How to use Revolution" <use-revolution at lists.runrev.com>
> Sent: 4/20/2009 6:23 PM
> Subject: Re: convert to scientific notation
> 
> Wouldn't that be 1/*  ;)
> 
> 
> On 21/04/09 11:18 AM, "Randall Reetz" <randall at randallreetz.com> wrote:
> 
>> I found this symbol... "/"  Very cool!  Inverse of multiply!
>> 
>> -----Original Message-----
>> From: "Randall Reetz" <randall at randallreetz.com>
>> To: "How to use Revolution" <use-revolution at lists.runrev.com>
>> Sent: 4/20/2009 6:08 PM
>> Subject: RE: convert to scientific notation
>> 
>> I need to sleep or go back to grade 3.  Sorry everyone.  Dont report me to
>> the
>> math authorities!
>> 
>> -----Original Message-----
>> From: "Randall Reetz" <randall at randallreetz.com>
>> To: "How to use Revolution" <use-revolution at lists.runrev.com>
>> Sent: 4/20/2009 5:46 PM
>> Subject: RE: convert to scientific notation
>> 
>> You are correct brian.  Sorry.  But i know when i was younger and smarter i
>> had an equasion that converted a number to scientific notation without
>> counting digits.  Used the power "^" function somehow.
>> 
>> -----Original Message-----
>> From: "Brian Yennie" <briany at qldlearning.com>
>> To: "How to use Revolution" <use-revolution at lists.runrev.com>
>> Sent: 4/20/2009 5:31 PM
>> Subject: Re: convert to scientific notation
>> 
>> Randall,
>> 
>> You want the nth root and you are doing it correctly, but have a false
>> assumption (the 10th root of 100 is NOT 2). I showed how to derive
>> 10^x = 100, which is more relevant to scientific notation. Scientific
>> notation does not involve taking the 10th root of a number, which I
>> why I figure you are confused.
>> 
>> Example: 2,098,000 = 2.098 x 10 ^ 6
>> 
>> No 10th roots involved, in fact you can just count digits.
>> 
>>> Not confused by what i mean.  How do i get the nth root of a number?
>>> 
>>> -----Original Message-----
>>> From: "Brian Yennie" <briany at qldlearning.com>
>>> To: "How to use Revolution" <use-revolution at lists.runrev.com>
>>> Sent: 4/20/2009 5:03 PM
>>> Subject: Re: convert to scientific notation
>>> 
>>> Randall,
>>> 
>>> I think you are confusing two different concepts.
>>> 
>>> 10^2 = 100, not 2^10 = 100.
>>> 
>>> What you want is something like this:
>>> 
>>> Step 1) 10^x = 100
>>> Step 2) log 10^x = log 100
>>> Step 3) x log 10 = log 100
>>> Step 4) x = log 100 / log 10
>>> 
> 
> 
> [truncated by sender]
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