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.
中彩手彩票网(网址:qmh8.com)中彩手彩票网_中彩手彩票网_中彩手彩票网_Ztv0vJy3J
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random