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.
OD体育开户娱乐地址（永久链接:SE8.TV）OD体育开户娱乐地址_OD体育开户娱乐地址_OD体育开户娱乐地址_OD体育开户娱乐地址_OD体育开户娱乐地址OD体育开户娱乐地址_OD体育开户娱乐地址_OD体育开户娱乐地址_ffhef0Kf3
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
