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.
¶ΰ rfc234.top ڸƷ̽˺ Ǹ7Ŀ ѱ渶 λ渶ּ 渶 渶Ȳ߰ 巹̽ 渶
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
