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在直角坐标系xOy中，曲线C的参数方程为 （α为参数） （1）求曲线C的普通方程； （2）在以O为极点，x正半轴为极轴的极坐标系中，直线l方程为ρsin（﹣θ）+1＝0，已知直线l与曲线C相交于...
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高三上学期数学《》真题及答案
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已知在直角坐标系xOy中直线l的参数方程为t为参数以坐标原点为极点x轴的正半轴为极轴建立极坐标系曲线
在直角坐标系xOy中已知曲线C的参数方程是θ是参数若以O为极点x轴的正半轴为极轴取与直角坐标系中相同
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