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.
金冠现金网（网址:qmh8.com）金冠现金网_金冠现金网_金冠现金网_金冠现金网_金冠现金网金冠现金网_金冠现金网_金冠现金网_23112q2A
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
