這個函數是自己定義用來計算學習曲線累積指數的:
Public Function sumlearn(factor, units)
' factor: learning percentage, 輸入值
' units: total units 輸入值
i = 1
x = 0
Do While i <= units
x = x + factor ^ (Log(i) / Log(2))
i = i + 1
Loop
sumlearn = x '輸出
End Function
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