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.
9(x−1)^2+4(y−2)^2+9(z−1)^2 = 36
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random