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.
k 取何值时 \det {{ k, 1 }, {2, 3 }} = 0 ?(答:。)
k 取何值时 \det {{ k, 1 }, {2, 3 }} = 0 ?(答:。)
Natural Language
Math Input
Extended Keyboard