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.
利澳平台开户（网址:QY81.COM）利澳平台开户_利澳平台开户_利澳平台开户_利澳平台开户_利澳平台开户利澳平台开户_利澳平台开户_利澳平台开户_g1ggfxEx5
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
