Find the vector from the point (4,1,8) to the point (2,2,0)
zero one out and do the same to the other
(4, 1,8) (2,2,0) -4-1-8 -4-1-8 ---------------- 0,0,0 <-2,2,-8>
and simplify :)
@amistre64 think you meant <-2, 1, -8>
.... im having issues with my fingertips today, i say one thing and they type another ... :)
but yes ...
(2 - 4) i + (2 - 1) j + (0 - 8)k, where i,j,k are unit vectors = -2i + j -8 k which is the same as (-2,1,-8) Ans. (-2,1,-8)
hmm....says their wrong?
if in doubt, negate everything lol
they prolly dont want a negtive first
chances are the vector is going in the wrong direction
<2,-1,8> and check to see that it doesnt ask for the unit vector
yea...still poppin up wrong
then it asked you something else
then they probably want the unit vector pointing in one of those two directions?
for the question you asked the answer is, as jim pointed out, <-2, 1, -8>
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