limx趋近于0 (x-arctanx)/tanx 3次方

limx趋近于0 (x-arctanx)/tanx 3次方 limx趋近于无穷时arctanx/x的极限 lim(n趋近于0)(arctanx)/x limx趋近于0sin3x/2x limx趋近于0 tan2x分之x limx趋近于0lnsinx/x limx趋近于0x分之tan2x limx趋近于0x乘cot3x 证明当x趋近于0时,arctanx~x limx趋近于0xlnx limx趋近于0lnarccosx lim(x趋近于0+）arctanx=? 极限趋近于0arctanx/x^2+1 limx趋近于0x^(x^x-1)的极限 证明x趋近于0+ limx[1/x]=1 limx趋近于0(sinx/x)^(1/x^2) limx趋近于0+ x·e^1/x limx趋近于0sin2xln(1+x)/4x^3