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.
{{2, 1, 4}, {3, 0, 3}, {0, 7, 2}}^(-1) . {1, 3, 1}
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random