求极限lim趋于0,sin(x的平方)*cos1/x/tanx
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求极限lim趋于0,sin(x的平方)*cos1/x/tanx
lim[ sinx²cos(1/x)]/tanx
=lim x²cos(1/x)/x
=lim xcos(1/x)
=0*cos(0)
=0
=lim x²cos(1/x)/x
=lim xcos(1/x)
=0*cos(0)
=0
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