limx趋近于0 x2/sin2(x/3)
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limx趋近于0x2/sin2(x/3)limx趋近于0x2/sin2(x/3)limx趋近于0x2/sin2(x/3)lim(x->0)x^2/(sin(x/3))^2(0/0)=lim(x->0)
limx趋近于0 x2/sin2(x/3)
limx趋近于0 x2/sin2(x/3)
limx趋近于0 x2/sin2(x/3)
lim(x->0) x^2/(sin(x/3))^2 (0/0)
=lim(x->0) 2x/sin(2x/3) (0/0)
=lim(x->0) 2/[(2/3)cos(2x/3)]
= 3
应该是1吧
limx趋近于0 x2/sin2(x/3)
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