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把线段分割成长短两段,当长段与短段之比等于全段与长段之比时,称之为黄金分割,其比值叫黄金比.设线段长为1,分得的长段为x,短段为1-x,于是1-xx=1x,解得正数解x=52+1.一般把短段与长段的比值,即1x=52+1=52-1称为黄金比.此时5-12≈0.618.分割点位置称为优选点或称为黄金我点们还
The segment is divided into two short segments. When the ratio of the long segment to the short segment is equal to the ratio of the whole segment to the long segment, it is called the golden section. The ratio is the golden ratio. The length of the segment is 1, and the long segment is x, the short segment is 1-x, so 1-xx=1x, the solution has a positive solution x=52+1. Generally, the ratio of the short segment to the long segment, ie 1x=52+1=52-1, is called gold. Than at this time 5-12 ≈ 0.618. The split point position is called the preferred point or called gold.