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.
det {{10b,4,0,-b-2},{b,0,1,0},{0,4,-10,1},{1,3,-7,1}}
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random