1. The Logarithmic Function
logare the same
However a log function is the inverse of an exponential

2. How to get the log function formula from y = 2
Switch x with y
ii) Rewrite as y=...
Log function = is the inverse of an exp. function

3. Characteristics of
Exponential Function Log Function
Domain: (- , )
Range: y > 0
Asymptote: y = 0
Domain: x > 0
Range: (- , )
Asymptote: x = 0

4. Sketch Graphs
f(x) = log2
f(x) = log2

5. f(x) = log
f(x) = - log2