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.
宝格丽开户（网址:QY81.COM）宝格丽开户_宝格丽开户_宝格丽开户_N22PF22QP
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
