Logarithmic Function HTML5 applet

An html5 applet to explore the properties of logarithmic functions. The parameters $a$, $b$, $c$, $d$ and $B$ included in the definition of a logarithmic function of the form

$f(x)= a \: log _B(b(x+c))+d$

may be changed and therefore the graph of function $f$ explored.
a =
b =
c =
d =
B =

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