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.
determinant ((1,-1,1,-1),(16,-8,4,-2),(81,-27,9,-3),(256,-64,16,-4))
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random