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.
乐博体育娱乐网址(网址:QY81.COM)乐博体育娱乐网址_乐博体育娱乐网址_乐博体育娱乐网址_ttBattt3t
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random