log base y Scientific Calculator

Hi guys,


I searched online for documentation about the log base y button in the iOS Scientific Calculator but I couldn't find any.


User uploaded file


What is it?

Is it the inverse log function?

If so what base? Base 10, 2 or e?


Thanks for the help.

iOS Scientific Calculator-OTHER, iOS 10, null

Posted on Oct 3, 2016 1:10 PM

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Posted on Oct 4, 2016 9:32 AM

This is not an inverse logarithm, it is a logarithm using any other base than existing buttons for base 10 or base 2 logarithms. The "y" is whatever base you want to use for the logarithm.


Suppose you'd want the base 4 logarithm of the number 12 (i.e. log4 12). The keystrokes you would use would be:

  • 12
  • logy
  • 4
  • =
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Question marked as ⚠️ Top-ranking reply

Oct 4, 2016 9:32 AM in response to Leo-Aguiar

This is not an inverse logarithm, it is a logarithm using any other base than existing buttons for base 10 or base 2 logarithms. The "y" is whatever base you want to use for the logarithm.


Suppose you'd want the base 4 logarithm of the number 12 (i.e. log4 12). The keystrokes you would use would be:

  • 12
  • logy
  • 4
  • =
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log base y Scientific Calculator

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