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.
adjoint [(1, 3, 1), (2, 1, 1), (-2, 2, -1)]
adjoint [(1, 3, 1), (2, 1, 1), (-2, 2, -1)]
Natural Language
Math Input
Extended Keyboard