11. 某一遞迴函數為 F(n) = F(n −1) + F(n − 2) ,若 且 ,則 ?
(A)
(B) 21
(C) 34
(D) F(0)=0 F(1)=1 F(8)= 13 55 int sum = 0; int num = 35; for (int i = 1; i <= 2*n; i++) { for (int j = 1; j <= n; j++) { num + = j*3; sum + = num; } } for (int k = 1; k <= n; k++) sum++;

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