Question

Determine if u = [2, 7, −1], v = [5, −3, 2] and w = [9, 11, 2] are coplanar.

Please explain why it is coplanar.

Answer 1

checku.v and hen v.w.

Answer 2

I'm not sure how, hence the question.

Answer 3

looks it is not coplanar
are you sure like that, is there the typo ?

Answer 4

I meant explain whether or not it is and show how you got it.