Question

What's the meaning of a dot product?

Answer 1

scalar product: a real number (a scalar) that is the product of two vectors.
wordnetweb.princeton.edu/perl/webwn

Answer 2

So what do the numbers mean?

Answer 3

u multiply divide or substract or add

Answer 4

If A,B are vectors
dot product between A and B will be
\[A*B=|A| |B| cos (theta) \]
where theta is the littlest angle between the two vectors
Another definitions is, using this definition
\[A=a_x+a_y+a_z+....+a_n\]
\[B=b_x+b_y+b_z+.....+b_n\]
Then\[A*B=a_x*b_x+a_y*b_y+a_z*b_z+...........+a_n*b_n\]
(a_x is the scalar component for x of the vector A)