定義有序正整數數對上的函數 , 滿足下列三條件 :
1. f(x,x) = x
2. f(x,y) = f(y,x)
3. (x+y)f(x,y) = yf(x,x+y)
求 f(45,12) = ?
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推
02/19 20:12, , 1F
02/19 20:12, 1F
→
02/19 20:12, , 2F
02/19 20:12, 2F
→
02/19 20:24, , 3F
02/19 20:24, 3F
推
02/19 21:22, , 4F
02/19 21:22, 4F
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