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.
辉煌网址（网址:EDF6.COM）辉煌网址_辉煌网址_辉煌网址_辉煌网址_辉煌网址辉煌网址_辉煌网址_辉煌网址_sb9xsxxs
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
