[求助] 求助一个证明题目

2楼: Originally posted by hank612 at 2015-10-18 14:17:19
https://en.wikipedia.org/wiki/Error_function

利用Error Function 的渐进展式erf(x)=\frac{2}{\sqrt{\pi}}\int_{0}^x e^{-t^2}dt\sim \frac{2}{\sqrt{\pi}}\sgn(x)\sqrt{1-e^{-x^2}}(\frac{\sqrt{\pi}}{2}+\fr ...

3楼: Originally posted by hank612 at 2015-10-18 14:20:20
https://en.wikipedia.org/wiki/Error_function

利用Error Functionerf(x)=\frac{2}{\sqrt{\pi}}\int_{0}^x e^{-t^2}dt 的渐进展式 \frac{2}{\sqrt{\pi}}sgn(x)\sqrt{1-e^{-x^2}}(\frac{\sqrt{\pi}}{2}+\frac{3 ...

4楼: Originally posted by zzrqyr at 2015-10-18 17:53:02
我也是得到这个结论，那就是文献上的有问题，谢谢了...