| (Oral Mines-Ponts) Calculer {F(y)=\displaystyle\int_{-\infty}^{+\infty}\!\!\dfrac{\,\text{d}x}{\left(1+x^{2}\right) \left(1+ixy\right)}}. |
| (Oral Mines-Ponts) Calculer {F(y)=\displaystyle\int_{-\infty}^{+\infty}\!\!\dfrac{\,\text{d}x}{\left(1+x^{2}\right) \left(1+ixy\right)}}. |