Definite Integration

$e^2 + e^3 - \frac{1}{e^2} - \frac{1}{e^3}$

$\frac{1}{2} \left( e^2 + e^3 - \frac{1}{e^2} - \frac{1}{e^3} \right)$

$e^2 + e^3 - \frac{1}{2e^2} - \frac{1}{2e^3}$

$\frac{1}{2}(e^2 + e^3) - \frac{1}{e^2} - \frac{1}{e^3}$