Question

$\ln x-\frac {1} {3}\ln3-\frac {1} {6}\ln81=0$ ise $x$ kaçtır?

Answer 1

$lnx-ln\sqrt[3]{3}-ln\sqrt[3]{9}=0$ ise 

$ln\frac{x}{\sqrt[3]{3}.\sqrt[3]{9}}=0$ ise $1=\frac{x}{3}$ gelir.