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.
竟彩官网（网址:EDF6.COM）竟彩官网_竟彩官网_竟彩官网_tb21pIb1p
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
