Calcular \(\require{AMSmath}\DeclareMathOperator{\sen}{sen}\displaystyle \lim_{n\to\infty} \int_0^{2\pi} \frac{\sen (nx)}{x^2+n^2} \, dx.\)
Calcular \(\require{AMSmath}\DeclareMathOperator{\sen}{sen}\displaystyle \lim_{n\to\infty} \int_0^{2\pi} \frac{\sen (nx)}{x^2+n^2} \, dx.\)