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 {{1, -λ, λ}, {-λ, 1, λ}, {λ, λ, 1}}
det {{1, -λ, λ}, {-λ, 1, λ}, {λ, λ, 1}}
Natural Language
Math Input
Extended Keyboard
