Applicare la formula: $\ln\left(\frac{a}{b}\right)$$=\ln\left(a\right)-\ln\left(b\right)$, dove $a=x+11$ e $b=\sqrt{x^3-4}$

Applicare la formula: $\ln\left(x^a\right)$$=a\ln\left(x\right)$, dove $a=\frac{1}{2}$ e $x=x^3-4$

Applicare la formula: $\frac{a}{b}c$$=\frac{ca}{b}$, dove $a=1$, $b=2$, $c=-1$, $a/b=\frac{1}{2}$ e $ca/b=- \left(\frac{1}{2}\right)\ln\left(x^3-4\right)$