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.
Verify whether {{ 1, 0, 0 }, {0, 1, 0 }, {0, 0, 1 }} is the identity
Verify whether {{ 1, 0, 0 }, {0, 1, 0 }, {0, 0, 1 }} is the identity
Natural Language
Math Input
Extended Keyboard
