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.
IM体育官网登录（网址:QY81.COM）IM体育官网登录_IM体育官网登录_IM体育官网登录_IM体育官网登录_IM体育官网登录IM体育官网登录_IM体育官网登录_IM体育官网登录_9SSSSzSV
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
