题目
4. (4.0分) 光滑曲面 F(x,y,z)=0 的法向量是A. (F_(x)^prime,F_(y)^prime,F_(z)^prime)B. (F_(x)^prime,F_(y)^prime,1)C. (F_(x)^prime,F_(y)^prime,-F_(z)^prime)D. (F_(x)^prime,F_(y)^prime,-1)
4. (4.0分) 光滑曲面 F(x,y,z)=0 的法向量是
A. $(F_{x}^{\prime},F_{y}^{\prime},F_{z}^{\prime})$
B. $(F_{x}^{\prime},F_{y}^{\prime},1)$
C. $(F_{x}^{\prime},F_{y}^{\prime},-F_{z}^{\prime})$
D. $(F_{x}^{\prime},F_{y}^{\prime},-1)$
题目解答
答案
A. $(F_{x}^{\prime},F_{y}^{\prime},F_{z}^{\prime})$