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漸進線方程為x±√3y=0,則設雙曲線方程是x^2-3y^2=k,(k>0) 即有x^2/k-y^2/(k/3)=1 焦點座標是c^2=16-8=8 即有k+k/3=8 k=6 即雙曲線方程是x^2/6-y^2/2=1
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