$$ f(x)= a \cdot\ log_{3}({x-b})+c$$

$$f(x)=\log_{3}{x}$$

f(x) = log(x) / log(3.0)
a = 1 (slider from -5 to 5, step 1)
b = 0 (slider from -5 to 5, step 1)
c = 0 (slider from -5 to 5, step 1)
g(x) = a * log(x - b) / log(3.0) + c
d: 1.0 x = b
p(x) = ld(x)