
#1
Sep2703, 09:37 AM

P: 110

I couldn't solve this problem guys:
Let vectors x, y, z be non zero vectors, no two of which are collinear. Find their sum if x+y is collinear with z and if y+z is collinear with x. Also, what does a collinear vector mean? 



#2
Sep2703, 12:16 PM

Emeritus
Sci Advisor
PF Gold
P: 16,101

Two vectors are collinear if they lie along the same line.
The easiest algebraic description of collinearity is that two vectors v and w are collinear if and only if one is a scalar multiple of the other. That is, there exists a number α such that: v = α w or w = α v 



#3
Feb2610, 04:07 PM

P: 28




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