Coordinates of a point in 3d space

Hello.

Need your help.

I need to find coordinates of a point I that lies on AB

What I know is:

-point A(5,5,5),

-point B(1,1,1),

-distance between B and I (in this case 1.0).

http://img46.imageshack.us/img46/394/sw9g.jpg

Your help is greatly appreciated. :)

Re: Coordinates of a point in 3d space

A vector going in the direction of .

You want to move along by 1 unit, so a unit vector going in that direction is

Therefore, to get to your point I, you need to add to each component of your starting point .

So your point .

Re: Coordinates of a point in 3d space

Re: Coordinates of a point in 3d space