Question

this one is super hard

Answer 1

We will solve a follows:

$\log _2(512)=x\Rightarrow x=9$

***Explanation of the procedure using change of base for a logarithm***

$\log _a(n)=\frac{\log _b(n)}{\log _b(a)}$

So:

$\log _2(512)=\frac{\log(512)}{\log(2)}=9$