Posted by haifeng on 2025-03-22 16:55:11 last update 2025-03-22 16:55:11 | Answers (1) | 收藏
求曲线 \[ \left\{ \begin{aligned} 2x^2+3y^2+z^2&=9,\\ 3x^2+y^2-z^2&=0 \end{aligned} \right. \] 在点 $(1,-1,2)$ 处的切线方程和法平面方程.