How do you evaluate $log_(1/15) (1/225)$ ?

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Answer 1 · 2016-08-10T19:47:04

I found: $log_(1/15)(1/225)=2$

Here you need a number $x$ such that:
$(1/15)^x=1/225$
You can find immediately that this number will be $x=2$ in fact:
$(1/15)^2=1/225$

How do you evaluate log_(1/15) (1/225)log_(1/15) (1/225)?