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.
拼搏娱乐(网址:EDF6.COM)拼搏娱乐_拼搏娱乐_拼搏娱乐_拼搏娱乐_拼搏娱乐拼搏娱乐_拼搏娱乐_拼搏娱乐_1EJ22yTJ
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random