Posted by Anonymous on Tuesday, February 26, 2008 at 9:15pm.
If "u = (2,2,1)", "v = (3,1,0)" and "w = (1,7,8)", verify that "u (dot) (v + w) = u (dot) v + u (dot) w".
My work:
LHS:
u (dot) (v + w)
= (2,2,1) (dot) (4,6,8)
= [(2,2,1) (dot) (3,1,0)] + [(2,2,1) (dot) (1,7,8)]
= [u (dot) v] + [u (dot) w]
Therefore, LHS = RHS
Did I prove this question correctly?

Math  Vectors  drwls, Wednesday, February 27, 2008 at 6:50am
You should calculate the numerical values for each side and show that thay are the same.
12 (left side)= 4 + 8 (right side)
Although the give you specific numerical values for u, v and w, the relationship is true in general.
Answer This Question
Related Questions
 Vectprs and Scalars  Why are some of these scalars and others are vectors? What...
 Vectors: Dot product  Given a and b unit vectors if a+b=square root 3, ...
 dot product of vecotrs  Question: Find (3a+b)dot(2b4a) if a=i3j+k and b=2i+...
 Physics  i41 tinypic com/2qna74k png (add the periods) For the vectors in the ...
 Science  Which of the following brake fluids is a strong paint solvent? DOT 1 ...
 linear algebra  show that if u (dot) v = 0 for all vectors v, then u = 0. One ...
 math  Graph the inequality:x</=2 A. <6,4,2,0,2,4,6> The dot is on ...
 Math  Graph the inequality:x</=2 A. <6,4,2,0,2,4,6> The dot is on ...
 physics  Three point charges are located away from a dot. charge 1 is 3 cm ...
 general math  here's an easy one for starters... what means greater or equal to...
More Related Questions