关于反比例函数的(2012•常州)如图,已知反比例函数y=k1 /x (k1>0),y=k2/ x (k2<0).点A在y轴的正半轴上,过点A作直线BC∥x轴,且分别与两个反比例函数的图象交于点B和C,连接OC、OB.若
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