Hello!

I need to prove that

I don't seem to know how to start proving this very evident example.

I started to move them around, and change bases, but got nothing useful.

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- February 6th 2010, 05:48 PMsiouxDifferent base logarithm proof
Hello!

I need to prove that

I don't seem to know how to start proving this very evident example.

I started to move them around, and change bases, but got nothing useful. - February 6th 2010, 05:56 PMfelper
- February 6th 2010, 06:03 PMsioux
Haha, was right in front of me. Thanks!

- February 7th 2010, 12:27 AMHallsofIvy
If you did not know that formula, you could use the fact that is defined as the inverse function to . That is, that and .

In particular, if then . But then . From that, . That is with .