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.
爱发168官网app（网址:qmh8.com）爱发168官网app_爱发168官网app_爱发168官网app_爱发168官网app_爱发168官网app爱发168官网app_爱发168官网app_爱发168官网app_9tJ8StZ29
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
