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.
环球体育真人（网址:QY81.COM）环球体育真人_环球体育真人_环球体育真人_环球体育真人_环球体育真人环球体育真人_环球体育真人_环球体育真人_3AA7syrrb
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
