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User: IraPalmer

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  1. More fun with the golden ratio on The Golden Ratio · · Score: 1

    Here is another sequence you can make with the golden ratio.

    phi = 1.6180339887....

    phi^1 - (1/phi)^1 = 1

    phi^2 + (1/phi)^2 = 3

    phi^3 - (1/phi)^3 = 4

    phi^4 + (1/phi)^4 = 7

    phi^5 - (1/phi)^5 = 11 ....

    if x = even then add phi^x + (1/phi)^x
    if x = odd then subtract phi^x - (1/phi)^x

    it will generate the sequence 1,3,4,7,11, ...76, 123,....

    now if you divide the a number in the sequence by the previous number you approach the limit phi

    3/1 = 3
    4/3 = 1.3333333...
    7/4 = 1.75
    11/7 = 1.5714...
    18/11 = 1.6363...
    29/11 = 1.6111111...
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    123/76 = 1.61842...

    I wonder how many other sequence may be related to phi