Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
欧宝下载app（永久链接:SE8.TV）欧宝下载app_欧宝下载app_欧宝下载app_欧宝下载app_欧宝下载app欧宝下载app_欧宝下载app_欧宝下载app_f8f2Q8fQ7
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
