lim x—0 (sin4x)/(3x平方-6x)
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lim x—0 (sin4x)/(3x平方-6x)
lim x—0 (sin4x)/(3x平方-6x)
lim x—0 (sin4x)/(3x平方-6x)
如图
=lim x->0 4x/(3x^2-6x)
=lim x->0 4/(3x-6)
=4/(0-6)
=-2/3
=-2/3
一次罗比达lim x—0 (sin4x)/(3x平方-6x)=lim x—0 4cos4x/6x-6=4/(-6)=-2/3
等价无穷小代换
lim x—0 (sin4x)/(3x平方-6x)=4x/(3x平方-6x)=4/3x-6=)=-2/3
lim x—0 (sin4x)/(3x平方-6x)
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