How do logarithmic functions work?

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Answer 1 · 2014-11-01T13:44:58

Definition

$log_bx=y$ if and only if $b^y=x$

Logarithmic functions are the inverse of the exponential functions with the same bases.

Example

If you wan to find the value of

$log_2 8=?$ ,

then convert the question in terms of exponential function

$2^{?}=8=2^3 => ?=3$ .

Hence, $log_2 8=3$ .

I hope that this was helpful.