convert to scientific notation
Randall Reetz
randall at randallreetz.com
Mon Apr 20 21:51:45 EDT 2009
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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