{{0.6811,-0.04215,1.266,0.5123},{-0.04215,0.1887,-0.3275,-0.1208},{1.266,-0.3275,3.096,1.285},{0.5123,-0.1208,1.285,0.5759}}

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.