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.
双彩论坛（永久链接:SE8.TV）双彩论坛_双彩论坛_双彩论坛_双彩论坛_双彩论坛双彩论坛_双彩论坛_双彩论坛_3ggcc0c0
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
