問題詳情
5 純量函數 f (x, y, z) = xyz 在點 P（－1,1,3）上，於向量 
方向之方向導數（directional derivative）為何？
(A) 11
(B)
(C)37
(D)
方向之方向導數（directional derivative）為何？(A) 11
(B)
(C)37
(D)
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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