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Hey guys, trying to teach myself Lin Algebra as I'm taking the class in the summer in a few weeks. Been watching the tutorials on both Kahn academy, but then found this serious of videos that are a lot more theoretical, but really feel I'm learning from this guy. He proposed this question in his video about determinants, and it bothers me. For the like of my I explain why this is the case in words. It makes to me in my head, but I couldn't write it down if someone asked me to.