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20 Days to Go(-11 Days): Logarithmic Transformation (上)

April 6, 2018
20 Days to Go(-11 Days): Logarithmic Transformation (上)
.font-size-custom{ font-size: 18px; line-height: 28px; } The graph in the figure shows the linear relation between log5y and log5x. Which of the following must be true?
20 Days to Go(-11 Days): Logarithmic Transformation (上)

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20 Days to Go(-11 Days): Logarithmic Transformation (上)
20 Days to Go(-11 Days): Logarithmic Transformation (上)
– 試Answer
首先將圖上兩個coordinate (0,3) 和 (2,0) 轉變為
以x 和 y 作為axis的coordinate
20 Days to Go(-11 Days): Logarithmic Transformation (上)
20 Days to Go(-11 Days): Logarithmic Transformation (上)
y=mx+C
大家應該都知 y=mx+C 呢一個slope-intercept form
m 和 C 分別是 slope 和 y-intercept
做log transform 要留意graph 的axis
然後將axis 的 log5y and log5x 變為slope-intercept form
20 Days to Go(-11 Days): Logarithmic Transformation (上)
20 Days to Go(-11 Days): Logarithmic Transformation (上)
1. 千萬不要直接將圖上coordinate代落Answer

2. 不要將圖上的axis當作平日的x-axis , y-axis

20 Days to Go(-11 Days): Logarithmic Transformation (上)

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