Applicare la formula: $\frac{d}{dx}\left(\ln\left(x\right)\right)$$=\frac{1}{x}\frac{d}{dx}\left(x\right)$, dove $x=x+1$

Applicare la formula: $\frac{a}{b}\frac{c}{f}$$=\frac{ac}{bf}$, dove $a=1$, $b=\ln\left(x+1\right)$, $c=1$, $a/b=\frac{1}{\ln\left(x+1\right)}$, $f=x+1$, $c/f=\frac{1}{x+1}$ e $a/bc/f=\frac{1}{\ln\left(x+1\right)}\frac{1}{x+1}\frac{d}{dx}\left(x+1\right)$

Applicare la formula: $ab$$=ab$, dove $ab=1\cdot 1$, $a=1$ e $b=1$