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.
葡京娱乐网手机版中文版（网址:EDF6.COM）葡京娱乐网手机版中文版_葡京娱乐网手机版中文版_葡京娱乐网手机版中文版_葡京娱乐网手机版中文版_葡京娱乐网手机版中文版葡京娱乐网手机版中文版_葡京娱乐网手机版中文版_葡京娱乐网手机版中文版_1Gffc3Gb1
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
