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.
1/2*{{1,1,-1,-2,1}, {-2,2,0,-2,2}, {2,0,0,0,0}, {2,-2,0,4,0},{1,-1,-1,0,3}}
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random