# Thread: exponential expression to Log

1. ## exponential expression to Log

did i convert these right?

2. $\log_5\left(\frac{1}{125}\right) = -3$

3. Originally Posted by rj2001
did i convert these right?
The first one is correct.

The second one though, recall that $a^b=c\implies\log_ac=b$

What do you think it should be now?

--Chris