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.
双赢网站（网址:EDF6.COM）双赢网站_双赢网站_双赢网站_双赢网站_双赢网站双赢网站_双赢网站_双赢网站_DDvZv1mv1
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
