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조회 : 211        작성자 : http://onlinekredit.     [ hjzetxvv6@mail.com ]  [ http://onlinekredit.pw/kredit-trotz-privatinsolvenz.html ]
Ideas of "closure" are just not very interesting unless you are going to do abstract algebra and move on to study general groups, fields, etc.I disagree. The closure concept is the ONLY way to introduce negative, rational and real numbers in a reasonably intuitive way. We're talking about high-school students here: they're not expected to come up with formal definitions or proofs.
작성일자 : 2016년 11월 18일


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