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.
雷火电竞吧（网址:EDF6.COM）雷火电竞吧_雷火电竞吧_雷火电竞吧_雷火电竞吧_雷火电竞吧雷火电竞吧_雷火电竞吧_雷火电竞吧_6uRR6S6SJ
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
