方向(d)和()为曲面上P点处的两个主方向,那么( ) -题库考试答案搜索网

方向(d)和()为曲面上P点处的两个主方向,那么( )

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2022-04-02 14:27

A、(d)和(<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/15129794141076544e80134874ffb9af5fc9d77547e9f.png" alt="上传图片">)正交
B、(d)和(<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/151297941538490fa216c0bba4f0e99fcec71fb463c70.png" alt="上传图片">)共轭
C、d)和(<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1512979416583675c0177ae6c4b69a8f288f64b1e3af6.png" alt="上传图片">)平行
D、d和(<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1512979417550d76f12e58f7f44dc9efd9ee30cc52e54.png" alt="上传图片">)方向相反

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标签：黑龙江省教育学院数学与应用数学（函授）专升本高等几何平时作业1

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