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.
AOA官方入口(网址:qmh8.com)AOA官方入口_AOA官方入口_AOA官方入口_8ixiZixJ
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random