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2009年浙江省高考理科第9题:过双曲线x~2/a~2-y~2/b~2=1(a>0,b>0)的右顶点A作斜率为-1的直线,该直线与双曲线的两条渐近线的交点分别为B、C.若
2009 Zhejiang Province Science Entrance Examination Subject 9: The right vertex A of the hyperbolic curve x ~ 2 / a ~ 2 ~ y ~ 2 / b ~ 2 = 1 (a> 0, b> 0) , The intersection of the two asymptotes of the straight line and the hyperbola are respectively B and C. If