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平面相交与平面方程
2022-06-30 15:49:00 【wwxy261】
系数矩阵的秩R(A)=2说明两个平面交线两两相交。
A. R(A)=2, R(A+）=3， 三个平面有唯一解。
B. R(A)=1
C. R(A)=2, R(A+)=2
D. R(A)=1.
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