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亲爱的网友：f（x）=（根号下x^2-3x-4）/x11/2×2/3×3/4×4/5×…×98/99×99/1002X-Y3=0,L2:4X-2Y-1=0,L3:XY-1=0mx2-(1-m)x1>0
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亲爱的网友：f（x）=（根号下x^2-3x-4）/x 11/2×2/3×3/4×4/5×…×98/99×99/100
2X-Y 3=0,L2:4X-2Y-1=0,L3:X Y-1=0mx2-(1-m)x 1>0
2X-Y 3=0,L2:4X-2Y-1=0,L3:X Y-1=0mx2-(1-m)x 1>0
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答案和解析
x=1 rcosA,y=-1 rsinA,r>0,A|ax b|0)对比M=,N=对比x=1 rcosA,y=-1 rsinA,r>0,A
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