论文部分内容阅读
本刊2003年第7期《一道错题》一文(下称“原文”),对一道训练题进行了探讨和证明,并指出该题是一道错题. 笔者也认为该题是一道错题,但原文的证明考虑问题欠全面,且没有结合实际生活中的杆秤.因此,有必要对该题重新讨论. [题目]有一水果店,所用的秤是吊盘式杆秤,量程为10 kg,现有一较大的西瓜,超过此秤的量程,店员A找到另一秤砣,与原秤砣完全相同,把它与原秤砣绑在
The article “A Mistake” in this issue of the 7th issue of the magazine (hereinafter referred to as the “original”) discusses and proves a training problem, and points out that the problem is a wrong one. The author also believes that the problem is a wrong one. However, the original proof does not consider the problem comprehensive, and it is not combined with the actual life of the steelyard. Therefore, it is necessary to re-discuss this question. [topic] there is a fruit shop, the scale used is a hanging-type steelyard scale, the range is 10 kg, now There is a larger watermelon, more than the range of this scale, clerk A find another scale, exactly the same as the original scale, tied it to the original scale