lim x->0 cos(2x)-1 / cosx -1 =
请问 lim x->0 cosx^1/(cos-1)=多少
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lim(x→0)(1/cosx)=?
lim{[3sinx+(x^2)*cos(1/x)]/[(1+cosx)ln(1+x)]}(x趋近于0)
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求极限lim(x→0)(1-根号cosx)/[x(1-cos根号x)]
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lim(x→0+)(1-cos√x)/In(1+xe^x)= lim(x→0)√(1-cosx)/sinx=
求极限lim(1-√cosx)/(1-cos√x) (x→0+)