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.
亚星官网官方 15595696085电f3et
亚星官网官方 15595696085电f3et
Natural Language
Math Input
Extended Keyboard
