Question

is it just a coincidence that the linear form: ax+by=c , resembles the dot product of vectors and ?

Answer 1

the "<..>" parts vanish on the left side

Answer 2

i still havent come up with a good answers as to what a dot product represents ....

Answer 3

A point is a e1 + b e2 where e1 e2 are unit.

(ax+by,cx+dy) ¨= x(a,c) + y(b,d)

Answer 4

U looked at Wiki for dot..?

Answer 5

wiki tends to do 2 things when i read it; either its too technical and floods me with a bunch of information; or its to benign and just parrots given properties

Answer 6

http://en.wikipedia.org/wiki/Dot_product#Geometric_interpretation

Answer 7

U won't have any trouble with that...

Answer 8

\[a.b=|a|\ |b|\ cos(t)\]

Answer 9

U can use the properties of an inner product to define angle.

Answer 10

it appears that when I get into linear algebra, that this might make a bit more sense to me :)

Answer 11

U have just to think of a point as a vector....

Answer 12

thnx :)

Answer 13

In linear algebra they confuse the issue with different bases and matrices but they are just vector representations....

Answer 14

Dot makes a whole lot more sense when u consider it together with the wedge a wedge b and where ab = a dot b + a wedge b