lim x->+∞ arctanx/x怎么解,不会呀.

lim(x+arctanx)/(x-arctanx) (x→∞) lim x(π/2-arctanx)＝?lim下面是+∞ lim(x→∞)arctanx/x的极限 lim(x→+∞)(2/π*arctanx)^x求极限 求极限lim(2/π*arctanx)^x x→∞ lim x->+∞ arctanx/x怎么解,不会呀. lim(x→+∞)(π/2-arctanx)/(sin1/x) lim(x→+∞)(π/2-arctanx)/sin1/x, lim x趋∞ arctanx/根号x 为什么0 lim(2/π arctanx)^x x趋近于∞ 求极限解题lim(x→∞)=arctanx/x 求极限lim(x→0)sinxsin(1/x);lim(x→∞)(arctanx/x) lim x→-∞ arctanx/2求极限 证明lim arctanX极限不存在?x→∞ lim(n趋近于0)(arctanx)/x lim(arctanx/sinx) x－>0 求极限lim(x→∞)(1+1/x)(2-((x+1)/x^2)*arctanx) lim x—∞[ (x+1)/(x平方+1) ] arctanx具体过程