Intersection line and plane

allenzzzxd

New member
Joined
Dec 6, 2010
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2
Hello everyone,

I had this question:

Prove that any line joining two points lying in opposite half-spaces determined by a hyperplane in Rn intersects the hyperplane.

I think that I can say that in this case, the line just has one of the 2 relations with the hyperplane, intersection or parallel. Then maybe I could use proof by contradiction to prove that parallel is not possible? I don't know how to prove this.

Could anyone please light me? Many thanks in advance.

Allen
 
Or maybe there are other solutions. Could anybody please help me? Thanks a lot in adavance.
 
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