LOG function

Category: Math and trigonometry
Introduced: Excel 2003

Summary

Returns the logarithm of a number to a specified base

Syntax

LOG(number, [base]) The LOG function syntax has the following arguments:
• Number Required. The positive real number for which you want the logarithm.
• Base Optional. The base of the logarithm. If base is omitted, it is assumed to be 10.

Example

=LOG(10)
=LOG(8, 2)
=LOG(86, 2.7182818)

Microsoft Support Page

https://support.microsoft.com/en-us/office/log-function-4e82f196-1ca9-4747-8fb0-6c4a3abb3280

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