极限函数计算lim( x^3 / sinx - x )lim( (1/e^x-1)-(1/x) )
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极限函数计算
lim( x^3 / sinx - x )
lim( (1/e^x-1)-(1/x) )
lim( x^3 / sinx - x )
lim( (1/e^x-1)-(1/x) )
lim x^3 / (sinx - x )(根据罗必塔法则x->0,0/0)
=lim3x²/(cosx-1)(0/0型)
=lim6x/(-sinx)(0/0型)
=lim6/(-cosx)=-6
lim( (1/e^x-1)-(1/x) )
=lim(x-e^x+1)/x(e^x-1)(根据罗必塔法则x->0,0/0型)
=lim(1-e^x)/(e^x+xe^x-1)(0/0型)
=lim(-e^x)/(e^x+e^x+xe^x)=-1/2
=lim3x²/(cosx-1)(0/0型)
=lim6x/(-sinx)(0/0型)
=lim6/(-cosx)=-6
lim( (1/e^x-1)-(1/x) )
=lim(x-e^x+1)/x(e^x-1)(根据罗必塔法则x->0,0/0型)
=lim(1-e^x)/(e^x+xe^x-1)(0/0型)
=lim(-e^x)/(e^x+e^x+xe^x)=-1/2
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