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.
汇通网官网（网址:QY81.COM）汇通网官网_汇通网官网_汇通网官网_汇通网官网_汇通网官网汇通网官网_汇通网官网_汇通网官网_Z2X7V5Z7Z
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
