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設雙曲線中心為:(d,0) 右準線為x=4:a^2/c=4-d 右焦點F(10,0),c=10-d 離心率為e=2,c/a=2 解方程組 a^2/c=4-d c=10-d c/a=2 得: a=4,c=8,d=2 b^2=c^2-a^2=48 雙曲線的方程:(x-2)^2/16-y^2/48=1
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