answersLogoWhite

0

"Log" is short for Logarithm and can be to any base.

The Logarithm of a number is the number to which the base has to be raised to get that number; that is why there are no logarithms for negative numbers. For example: 10² = 100 → log to base 10 of 100 is 2.

There are two specific abbreviations:

  • lg is the log to base 10
  • ln is the log to base e - e is Euler's number and is approximately 2.71828184; logs to base e are known as natural logs.

On an electronic calculator the [log] button takes logarithms to base 10. The inverse function (anti-log) is marked as 10^x.

Similarly the [ln] button takes logs to base e, with the inverse function marked as e^x.

User Avatar

Wiki User

8y ago

What else can I help you with?