Applicare la formula: $\log_{b}\left(x^a\right)$$=a\log_{b}\left(x\right)$, dove $a=x$, $b=10$ e $x=a$

Applicare la formula: $\log_{b}\left(x^a\right)$$=a\log_{b}\left(x\right)$, dove $a=2n\left(a,3\right)$, $b=10$ e $x=\ln\left(a\right)$

Applicare la formula: $ax=b$$\to x=\frac{b}{a}$, dove $a=\log \left(a\right)$ e $b=2n\left(a,3\right)\log \left(\ln\left(a\right)\right)+\log_{a}\left(4\right)-1$