問題詳情

3. Given that ▽ㆍF = D and ▽x F = C, which are true?
(A) ▽.C=0
(B)▽.D=0
(C) ▽C=0
(D) ▽D =0
(E) F =▽U+▽XW

參考答案

答案:[無官方正解]
難度:計算中-1
書單:沒有書單,新增