èç«y=x+k-1åy=k/xå¾
x²+(k-1)x-k=0
å|OP|=â(m²+n²)=â37,â´m²+n²=37
ç±é¢æå¾mæ¯æ¹ç¨x²+(k-1)x-k=0çä¸ä¸ªè§£,ä¸n=m+k-1
代å
¥å¾2m²+2(k-1)m+(k-1)²-37=0
æm代å
¥x²+(k-1)x-k=0å¾m²+(k-1)m-k=0,å³2m²+2(k-1)m-2k=0
â´(k-1)²-37=-2k,解å¾k=6
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