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阿基米德曾经说:给我一根足够长的杠杆,我就可以撬动地球. 杠杆在日常生活中的作用举不胜举,在数学中有用武之地吗?当然有!用杠杆原理解(证)比例题目还真方便简洁,别有一番情趣.
Archimedes once said: Give me a long enough leverage, I can shake the earth. Leverage in daily life is too numerous to play in mathematics useful place? Of course! Use Leverage to understand ( Certificate) The proportion of questions really convenient and concise, do not have some fun.