几道极限题!1,lim(x->1)(1-x)tanπ/22,lim(x->0)(tanx-sinx)/x^3

几道极限题!1,lim(x->1)(1-x)tanπ/22,lim(x->0)(tanx-sinx)/x^3 lim[tan(tanx)-sin(sinx)]/x³,x趋近于0的极限是1, lim (tanx-sinx)/x (x→0)的极限； lim (1-cos4x)/xsinx (x→0)的极限 求极限lim(x->0,((1+tanx) /(1+sinx))^(1/x^3)) 求极限lim(x->0,((1+tanx) /(1+sinx))^(1/x^3)) 做到这里e lim（tanx-sinx）/x＾3,x趋向0,求极限,是1/2吗? 求极限lim.tanx-sinx / x^3 lim趋于0((tanx-x)/(x-sinx))^(cotx-1/x) 求极限lim(x-->0) (tanX-sinX)/[(sin^3)X] 求极限:lim(x→0)(tanx-sinx)/x^3 求极限lim(x趋于0)(x-tanx)/(sinx)^3 求极限：lim{[x-ln(1+tanx)]/sinx*sinx},x趋于0, 求帮忙