limx→1(x^3-x^2-x+1/2x^3-3x^2+1)=?如题
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limx→1(x^3-x^2-x+1/2x^3-3x^2+1)=?如题limx→1(x^3-x^2-x+1/2x^3-3x^2+1)=?如题limx→1(x^3-x^2-x+1/2x^3-3x^2+1
limx→1(x^3-x^2-x+1/2x^3-3x^2+1)=?如题
limx→1(x^3-x^2-x+1/2x^3-3x^2+1)=?
如题
limx→1(x^3-x^2-x+1/2x^3-3x^2+1)=?如题
lim(x->1)(x^3-x^2-x+1)/(2x^3-3x^2+1) (0/0)
=lim(x->1)(3x^2-2x-1)/(6x^2-6x) (0/0)
=lim(x->1)(6x-2)/(12x-6)
=4/6
=2/3
原式=limx→1(x+1)(x-1)²/((2x+1)(x-1)²
=limx→1(x+1)/((2x+1)
=2/3
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