解ï¼ä½CEâ¥AOäºEï¼DFâ¥CEäºFï¼
âµåæ²çº¿y1=1/x(xï¼0)ï¼y2=4/x(xï¼0)ï¼ä¸PAâ¥xè½´äºç¹Aï¼PBâ¥yè½´äºç¹Bï¼PAãPBåå«ä¾æ¬¡äº¤åæ²çº¿y1=1/xäºDãC两ç¹ï¼
â´ç©å½¢BCEOçé¢ç§¯ä¸ºï¼xy=1ï¼
âµBCÃBO=1ï¼BPÃBO=4ï¼
â´BC=BP/4ï¼
âµAOÃAD=1ï¼AOÃAP=4ï¼
â´AD=AP/4ï¼
âµPA•PB=4ï¼
â´3PB/4Ã3PA/4=9PA•PB/16=CPÃDP=9/16Ã4=9/4ï¼
â´â³PCDçé¢ç§¯ä¸ºï¼9/8ï¼
æ çæ¡ä¸ºï¼9/8ï¼