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.
博马开户（网址:QY81.COM）博马开户_博马开户_博马开户_博马开户_博马开户博马开户_博马开户_博马开户_y655y2i5
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
