✔ 最佳答案
信用卡ma?
我就唔幫你做la
不過就比d tips你la
你有冇留意信用卡兩邊之間ge比例呢???
係黃金比例呀!~!
即1:1.6180339887.......呀!!!
The golden ratio, usually denoted ('phi'), expresses the relationship that the sum of two quantities is to the larger quantity as the larger is to the smaller. The golden ratio is the following algebraic irrational number with its numerical approximation:
The figure of a golden section on the right illustrates the defining geometric relationship. Expressed algebraically:
At least since the Renaissance, many artists and architects have proportioned their works to approximate the golden ratio—especially in the form of the golden rectangle, in which the ratio of the longer side to the shorter is the golden ratio—believing this proportion to be aesthetically pleasing. Mathematicians have studied the golden ratio because of its unique and interesting properties.
Other names frequently used for or closely related to the golden ratio are golden section (Latin: sectio aurea), golden mean, golden number, and the Greek letter phi (φ). Other terms encountered include extreme and mean ratio, medial section, divine proportion (Italian: proporzione divina), divine section (Latin: sectio divina), golden proportion, golden cut, and mean of Phidias.
[a+b]/a=a/b=φ
[bφ+b]/[bφ]=bφ/b
[φ+1]/φ=φ
φ^2-φ-1=0
x=[1+5^0.5]/2
=1.6180339887...............///
i hope i can help you!~φφφ_ _ _ φφφ