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.
루키 챌린지-（12399.CC）-루키 챌린지->>12399.cc<<-x9np2.html
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
