If you really want help then you will type out the question in a readable format.
The question is attached (#1, parts a and b). I have no idea how to do part b and as for part a. I don't remember what I did but when I try to think about the problem: I see that to find that the lines do not intersect I need to find that there is an inconsistence between the s[7,-1,-2] and t[1,1,2] slopes. (Is that what they're called?) Also, to find that they're not parallel I need some matrix to have only nonzero rows but I am confused as to which matrix I look at for the parallel one. Is it the same as the one where I looked for the inconsistence?
If I'm unclear, please tell me.
Any help would be GREATLY appreciated!
Thanks in advance!
I still don't get the problem, are you not able to see the image or something? I retyped it though like you asked:
"Consider the lines l1: [-5,4,3] + s[7,-1,-2] and l2: [4,-1,8] + t[1,1,2].
(a) Show that l1 and l2 are skew lines.
(b) What is the distance between l1 and l2?"