Inverse Log 10 value

[Randy]

Hello,
Can someone tell me how to derive the Inverse of Math.Log10(value)?
Thanks

 

[Mattias Sjögren]

Randy,

Can someone tell me how to derive the Inverse of Math.Log10(value)?

Are you looking for Math.Pow( 10, x )



Mattias

 

[Randy]

I'm not sure...as part of some program specs...I'm to calculate the Inverse
of Log10(of some value). I think you can see what I'm talking about if you
open the Windows Calculator in Scientific mode and then clicn the Inv switch
and then do a Log function on any number...
Example: The inverse of Log10(1.5) == 31.62277...
Log10(31.62277...) = 1.5
Thanks

 

[Adam Clauss]

log10(31.62277) = 1.5
and
Pow(10,1.5) = 31.62277

Which is what you want right?
--
Adam Clauss
(e-mail address removed)

I'm not sure...as part of some program specs...I'm to calculate the Inverse
of Log10(of some value). I think you can see what I'm talking about if you
open the Windows Calculator in Scientific mode and then clicn the Inv switch
and then do a Log function on any number...
Example: The inverse of Log10(1.5) == 31.62277...
Log10(31.62277...) = 1.5
Thanks

 

[David Browne]

I'm not sure...as part of some program specs...I'm to calculate the Inverse
of Log10(of some value). I think you can see what I'm talking about if you
open the Windows Calculator in Scientific mode and then clicn the Inv switch
and then do a Log function on any number...
Example: The inverse of Log10(1.5) == 31.62277...
Log10(31.62277...) = 1.5
Thanks

Cast your mind back to high-school algebra.


log b = n just in case a^n=b
a

That's the definition of "log".

so

Pow(10,Log10(x)) = X, for all x

Which is the definition of "inverse".

David

 

[Randy]

I think you are right. If I do a Math.Pow(10,x) on it comes out
right...thanks

 

[Randy]

Yes...that's right...thanks for the help!

log10(31.62277) = 1.5
and
Pow(10,1.5) = 31.62277

Which is what you want right?