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.
F88体育官网（网址:EDF6.COM）F88体育官网_F88体育官网_F88体育官网_F88体育官网_F88体育官网F88体育官网_F88体育官网_F88体育官网_tt2tvGK27
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
