2 Answers
kunl
·2011-02-24 23:29:13
coz (OM)a→ means (OM)2a(unit vector)[scalar multiplication!!!]
OM=scalar(length)[1]
Vinay Arya
·2011-02-25 01:23:58
Well.If two vectors are colliner then we can write so.Suppose a is parallel to b.And a is twice of b.So 2a→=b→
So how come there use of unit vector.I want to ask why a unit vector?