且
则
的值是___________.相关试题
已知两点M(1，
)、N(－4，－)，给出下列曲线方程:
①4x+2y－1="0," ②x2+y2="3," ③
+y2="1," ④－y2=1,在曲线上存在点P满足|MP|=|NP|的所有曲线方程是_________.
推荐套卷
已知两点M(1，)、N(－4，－)，给出下列曲线方程:
①4x+2y－1="0," ②x2+y2="3," ③+y2="1," ④－y2=1,在曲线上存在点P满足|MP|=|NP|的所有曲线方程是_________.
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