Applicare la formula: $\frac{a}{b}+\frac{c}{b}$$=\frac{a+c}{b}$, dove $a=-3e^{-x}$, $b=2$ e $c=e^{-x}x$

Applicare la formula: $a+\frac{b}{c}$$=\frac{b+ac}{c}$, dove $a=e^x$, $b=-3e^{-x}+e^{-x}x$, $c=2$, $a+b/c=e^x+\frac{-3e^{-x}+e^{-x}x}{2}$ e $b/c=\frac{-3e^{-x}+e^{-x}x}{2}$

Applicare la formula: $a\frac{b}{c}$$=\frac{ba}{c}$, dove $a=d$, $b=-3e^{-x}+e^{-x}x+2e^x$ e $c=2$

Applicare la formula: $\frac{\frac{a}{b}}{c}$$=\frac{a}{bc}$, dove $a=\left(-3e^{-x}+e^{-x}x+2e^x\right)d$, $b=2$, $c=dx$, $a/b/c=\frac{\frac{\left(-3e^{-x}+e^{-x}x+2e^x\right)d}{2}}{dx}$ e $a/b=\frac{\left(-3e^{-x}+e^{-x}x+2e^x\right)d}{2}$