convert to scientific notation

[Terry Judd]

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
>> 
>> In short, you need to use logarithms and you'll get a formula where x
>> = log y / log z.
>> 
>> If you were trying to solve x^10 = 100, then you could do what you
>> suggest and just raise both side to the (1/10)th power. But that
>> number will not be 2 -- it's about 1.58.
>> 
>> 
>>> I can't remember how to use power function "^" to find the nth root
>>> of a number.  To find the 2ndth root of a number we can use the
>>> "sqrt()" function.  But to find the nth root????
>>> 
>>> For instance, lets say I want to convert a number to scientific
> 
> 
> [truncated by sender]
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