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},{0,3}}*{{a,-2},{0,0.5a+4}} = {{a,-2},{0,0.5a+4}}*{{-1,2},{0,3}}
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random