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.
rref {{3,2,1,0},{-i, i, 1,0},{2,3,1,0}}
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random