# Exam question t/f 2

Mdhiggenz

## Homework Statement

I just remembered another question that I wasn't to sure about

1) if n1xn2 does not intersect the plan then n1xn2=0
I chose false for this one.

thoughts?

## The Attempt at a Solution

voko
What are n1 and n2, and what is "the plan"?

Mdhiggenz
Plane* sorry, n1, and n2 and vectors.

voko
What plane is this? n1 x n2 is a vector, and for any given vector there are infinitely many planes it does not intersect.

Mdhiggenz
Its a true or false question, don't know what else to tell you.

voko
What is "the" plane in the question? Or was that really "a" plane?

Mentor
I'm guessing that n1 and n2 are vectors in the plane, and "intersect" means that it (n1 x n2) intersects at a single point.

Mdhiggenz
Indeed Mark.

Homework Helper
Gold Member
Its a true or false question, don't know what else to tell you.

You could tell us the complete and exact wording of the question. I have read up through post #8 and I still have no idea what this is about.

Mdhiggenz
Honestly that is exactly how the question was worded.

Mentor
Since you're going by what might be an imperfect memory of the problem statement, let's assume that it was as I said.

IOW, n1 and n2 are vectors in a plane. If n1 X n2 does not intersect the plane at a single point, then n1 X n2 = 0.

Mdhiggenz
Ugggg why put true or false on a math exam...