15.圓x2+y2+x-6y+3=0上兩點(diǎn)P.Q關(guān)于直線(xiàn)kx-y+4=0對(duì)稱(chēng).則k= . 查看更多

 

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圓x2+y2+x-6y+3=0上兩點(diǎn)P、Q關(guān)于直線(xiàn)kx-y+4=0對(duì)稱(chēng),則k=
 

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圓x2+y2+x-6y+3=0上兩點(diǎn)P、Q關(guān)于直線(xiàn)kx-y+4=0對(duì)稱(chēng),則k=______.

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圓x2+y2+x-6y+3=0上兩點(diǎn)P、Q關(guān)于直線(xiàn)kx-y+4=0對(duì)稱(chēng),則k=______.

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圓x2+y2+x-6y+3=0上兩點(diǎn)P、Q關(guān)于直線(xiàn)kx-y+4=0對(duì)稱(chēng),則k=__________.

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圓x2+y2+x-6y+3=0上兩點(diǎn)P、Q關(guān)于直線(xiàn)kx-y+4=0對(duì)稱(chēng),則k=   

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