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.
向日葵娱乐（网址:EDF6.COM）向日葵娱乐_向日葵娱乐_向日葵娱乐_向日葵娱乐_向日葵娱乐向日葵娱乐_向日葵娱乐_向日葵娱乐_66B1QQ1u1
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
