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y=﹣4x+3 y=﹣4x﹣3 y=4x+3 y=4x﹣3
3x-y-2=0 3x-4y+1=0或3x-y+2=0 3x-y-2=0或3x-4y+1=0 3x-y-2=0或3x-4y-1=0
曲线没有渐近线 y=-(π/2)是曲线的渐近线 x=0是曲线的渐近线 y=π/2是曲线的渐近线
2x2-4y2=1 2x2-4y2=2 2y2-4x2=1 2y2-4x2=3
x-y-2=0或5x+4y-1=0 x-y-2=0 x-y+2=0 x-y-2=0或4x+5y+1=0
(1-y)sinx+2y-3=0 (y-1)sinx+2y-3=0 ( y+1)sinx+2y+1=0 -(y+1)sinx+2y+1=0
x+4y-2=0 x-4y+2=0 4x+2y-1=0 4x-2y-1=0
x+4y-2=0 x-4y+2=0 4x+2y-1=0 4x-2y-1=0
x-y-2=0 x+y-2=0 x+4y-5=0 x-4y-5=0
3x-y-2=0 3x-4y+1=0 3x-y-2=0或3x+4y-1=0 3x-y-2=0或3x-4y+1=0
3x±4y=0 3x±5y=0 4x±3y=0 5x±4y=0