I'm trying to solve a problem described in the image below, but I can't figure out where I've gone wrong as the position vector of my answer does not reduce to the answer in the book(2nd image) https://i.stack.imgur.com/QRFhZ.jpg I'm certain that its an error with my line of reasoning because when I repeat with another point, I get a different line.
2026-04-24 11:19:43.1777029583
Reflecting a line over a plane
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