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.
大洋时时娱乐（网址:QY81.COM）大洋时时娱乐_大洋时时娱乐_大洋时时娱乐_大洋时时娱乐_大洋时时娱乐大洋时时娱乐_大洋时时娱乐_大洋时时娱乐_u71U1QuQ0
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
