Suppose that is a point not on the line .
Then distance .
I'd just like it if someone could tell me where it is I'm going wrong in my calculations.. It might even be at the very beginning, I'm at a loss. ):
'Find the distance from the point P(3,0,-1) to the line with equation '
Any point on the line I got to be .
That means that , and the direction vector of the line is
Then I tried to calculate their scalar product to find when they are perpendicular and thus closest to each other, but then I got to be 0...
So would someone please tell me where it is I go wrong?
Is it something at the very beginning? ):
And then another question that is very simple!
What is the direction vector of the line 3x-y=4?
A fixed point would be (0,-4), right?
Thanks in advance!