Answer

问题及解答

证明: $\lim_{T\rightarrow+\infty}\frac{1}{\pi}\int_{-T}^{T}\frac{\sin jx}{x}dx=1$.

Posted by haifeng on 2012-07-07 16:13:51 last update 2012-07-07 16:13:51 | Edit | Answers (0)

证明:

\[\lim_{T\rightarrow+\infty}\frac{1}{\pi}\int_{-T}^{T}\frac{\sin jx}{x}dx=1.\]


References:

张恭庆 《泛函分析讲义》 P.174-175.