Definition: the Logarithmic function is a function of the form 
where 
Properties of logarithmic functions
- Scope
- Multiple value
- Parity, odd parity
- The intersection with the coordinate axes
- Continuity and derivative
- The intervals of constancy of sign
- The increase and decrease of
- Asymptotes
The function is neither even nor odd
when 
Of intersection with the axis of the
no 
(
scope)
The function is continuous and diferencian in the whole scope
when 
in 
when 
in 
Extrema no
in 
— growing
when it 
comes
Video 
— vertical asymptote
Functions 
and 
mutually inverse functions, so the Graphs are symmetric with respect to the line 
Graphs of logarithmic functions
