# Exponential and logarithmic functions

• May 10th 2013, 11:41 AM
alejandro
Exponential and logarithmic functions
The poi nt P(-1,1/3) lies on the graph of the exponential function f(x) = bx, then b =

I need the steps please or What I should know before I see an exercise like this in a exam!!
• May 10th 2013, 12:45 PM
HallsofIvy
Re: Exponential and logarithmic functions
You are told that $y= b^x$, and that when x= -1, y= 1/3. That is, $b^{-1}= 1/3$. Now, do you know what "-1 power" means?
• May 10th 2013, 04:53 PM
Oldspice1212
Re: Exponential and logarithmic functions
a​-n = 1/an