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.
手吉网（网址:EDF6.COM）手吉网_手吉网_手吉网_手吉网_手吉网手吉网_手吉网_手吉网_7PATmm7P7
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
