x趋向于1 limx²-x+2/x-1=

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x趋向于1 limx²-x+2/x-1=
x趋向于1 limx²-x+2/x-1=

x趋向于1 limx²-x+2/x-1=
lim(x→1) (x²-x+2)/(x-1)
=lim(x→1) (x+1)(x-2)/(x-1)
极限是∞