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