1. The Logarithmic Function
are the same
log
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
Domain: (- ,
Range: y > 0
Asymptote: y = 0
)
Log Function
Domain: x > 0
Range: (- ,
)
Asymptote: x = 0

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

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