x²/4+y²/16=1和3x²/16+y²/4=1联立∴ x²+y²/4=4和3x²/16+y²/4=1∴ 13x²/16=3∴ x²=48/13∴ y²=16/13∴ y²/x²=1/3∴ 渐近线的斜率是k=±√3/3渐近...