求lim(x趋近0)（x-arctanx)/X^3的极限,

求lim(x趋近0)（x-arctanx)/X^3的极限, lim(x趋近无穷大）x(x/2-arctanx) 求极限? 大学数学极限lim x趋近0　[(sinx)^2*sin1/x]/arctanx lim(x(e^x+1)-2(e^x-1))/(e^(x^2)-1)arctanx,在x趋近0时的极限在线等急求 洛必达求极限 limsinxlnx x趋近于0+,lim(2/π·arctanx)^x x趋近无穷大,lim(ln1(/x))^x x趋近0+,limlnx·ln(1+x) x趋近0+,lim(x^3+x^+x+1)^1/3-x x趋近无穷大,lim (e^x-e^sinx)/(x-sinx) x趋近0,lim(sinx/x)^(1/x^2)x趋近0,lim[1/e· (1/+x) 利用有界量乘无穷小依然是无穷小求极限,题目是lim（x趋近0）x^2sin1/x还有lim（x趋近于无穷）arctanx/x利用“有界量乘无穷小依然是无穷小”求极限,题目是lim（x趋近0）x^2sin1/x还有lim（x趋近于 lim x趋近0 cot（x）求xcotx 求lim x趋向于0(arctanx)/(x^+1) 求lim x趋向于0(arctanx)/(x^2+1) 求lim(x→0)arctanx/x的极限, lim(x趋近0)ln(x/sinx) 求极限lim(x→0)sinxsin(1/x);lim(x→∞)(arctanx/x) lim cot/linx x趋近0+0 lim x趋近0sinx/tanx-sinx 求lim(1-x/2)^2/x x趋近与0的极限 求lim(1-x)^1/3x x趋近与0的极限 求lim(1-x/2)^2/x x趋近与0的极限 求lim(1-x)^1/3x x趋近与0的极限 当x趋近与0时,如何证明arctanx与x等价无穷小,当x趋近与0,如何求极限tan3x/x的值 lim(n趋近于0)(arctanx)/x