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.
taptap官网（网址:QY81.COM）taptap官网_taptap官网_taptap官网_taptap官网_taptap官网taptap官网_taptap官网_taptap官网_3QSQQpp2B
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
