lim(n→1)sin(1-x)/(x^3-1)
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lim(n→1)sin(1-x)/(x^3-1)
lim(n→1)sin(1-x)/(x^3-1)
lim(n→1)sin(1-x)/(x^3-1)
lim(x→1)sin(1-x)/(x^3-1)
=lim(x→1)(1-x)/3(x-1)
=-1/3
lim(n→1)sin(1-x)/(x^3-1)
=lim(n→1)cos(1-x)*(-1)/3x^2 (0/0型 分子分母分别求导)
=-1/3 lim(n→1)cos(1-x)/x^2
=-1/3cos0/1^2
= -1/3
lim(n→1)sin(1-x)/(x^3-1)
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