LOG644 LOG Function Base 10. If the base is not supplied by default it is 10. Click the function button fx under the formula toolbar a popup will appear under the select function double-click on the LOG function.
The base argument defaults to 10 if not supplied.
How do you calculate time difference when its negative without getting the treatment. The Excel LOG function returns the logarithm of a given number using a supplied base. Select Add option from the Type section. Using the LN on most calculators or the LN function in Excel.