Applicare la formula: $\int_{a}^{b} cxdx$$=c\int_{a}^{b} xdx$, dove $a=\frac{\pi }{4}$, $b=\frac{\pi }{3}$, $c=-1$ e $x=\tan\left(x\right)\sec\left(x\right)$

Applicare la formula: $\int\sec\left(\theta \right)\tan\left(\theta \right)dx$$=\sec\left(\theta \right)+C$

Applicare la formula: $\left[x\right]_{a}^{b}$$=eval\left(x,b\right)-eval\left(x,a\right)+C$, dove $a=\frac{\pi }{4}$, $b=\frac{\pi }{3}$ e $x=\sec\left(x\right)$