While the value of a logarithm itself can be positive or negative, the base of the log function and the argument of the log function are a different story.
The argument of a log function can only take <u>positive base arguments</u>. In other words, the only numbers you can plug into a log function are <u>positive base numbers</u><u> </u><u>as</u><u> </u><u>it</u><u> </u><u>is</u><u> </u><u>always</u><u> </u><u>1</u><u>.</u>
