题目内容
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[主观题]
求下列二次曲线的奇异点: (1)3x2-2y2+6x+4y+1=0; (2)2xy+y2-2x-1=0; (3)x2-2xy+y2-2x+2y+1=0.
求下列二次曲线的奇异点:
(1)3x2-2y2+6x+4y+1=0;
(2)2xy+y2-2x-1=0;
(3)x2-2xy+y2-2x+2y+1=0.
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