Hi everyone
I have worked solutions to the question, but I don't fully understand what they are doing and I get a different answer.
I used d=|PQ*n| and chose (0, 0, -7/2) as a point on the plane. I got that point by letting i and j = 0.
Since P = (1, 1, -1), PQ = (-1, -1, -5/2).
The...