Take the 2-minute tour ×
Web Applications Stack Exchange is a question and answer site for power users of web applications. It's 100% free, no registration required.

How can you find the plane of four points by WolframAlpha?

Example

plane((0,0,0),(2,-1,-1),(4,-2,-2),(8,-4,-4))

should give me x + y + z = 0.

share|improve this question

migrated from superuser.com Dec 26 '10 at 2:07

This question came from our site for computer enthusiasts and power users.

3 Answers 3

You would have to break it down into pieces and wolfram does not support combined modules like this.

Finding the Vectors

Format : (2,-1,-1) - (4,-2,-2)

Finding the Cross Product

Format : {a1,a2,a3} cross {b1,b2,b3}

Then substitution of one of the points after that.

share|improve this answer

You can do this by querying

plane through (0,0,0),(2,-1,-1),(4,-2,-2),(8,-4,-4)

Note that the points you've written down are all on a line so don't uniquely define a plane. If instead you give it some points which do uniquely define a plane

plane through (0,0,0),(1,0,0),(-1,0,0),(0,1,0)

you get a unique plane as the answer.

share|improve this answer

This is one of the things you can't be lazy with using Alpha. Solution: don't be lazy (well, just this once. Spend an hour playing Black Ops to make up for it.)

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.