lim[sin(x-3)]/√(1+x) -2 x趋于3求极限 急

1.lim x→0 3x/(sinx-x)2.lim x→0 (1-cosmx)/x^23.lim x→0 sin4x/[(√x+2)-√2]4.lim h →0 [sin(x+h)-sin(x-h)]/h lim x->0 (sin x-tan x)/sin (x^3) 1、lim(x->无穷大) e^x arctanx2、lim(x->0)sinx√1+sin(1/x)3、lim(x->无穷大)【（√x^2+x+1）-【(√x^2-x+1)】4、lim(x->无穷大)((x+{x+(x)^0.5]^0.5}^0.5)/(2x+1)^0.55、lim(x->0)(sin3x+x^2sin1/x)/((1+cosx)x)6、lim(n->无穷大)(2^n)(si lim(n→1)sin(1-x)/(x^3-1) lim(1+sinx-sin(sinx))^x^-3 x趋于0 lim[sin(x-3)]/√(1+x) -2 x趋于3求极限 急 lim√（1+x+x^2）-1／x^3+sin^2xhelp！！！ lim x [sin ln(1+3/x)-sin ln(1+1/x)],x趋近于无穷大, lim(x(sin)^2) 求极限 （（sin(x^3+x^2-x)+sin x) /x x→0 已知lim sinx/x=1 求极限lim(x→∞）(sin√x+1-sin√x) 求极限lim(x→+∞)(sin√(x+1)-sin√x) lim(x趋向于正无穷大时)[sin√(x+1)-sin√x] lim(sin√(x+1)-sin√x) x→+∞ 请教一道函数极限问题：lim[sin√（x^2+1)-sin(x)] (x→+∞) 求极限lim[sin(x^3)/x(x-ln(1+sinx))] x趋于0lim[sin(x^3)/x(x-ln(1+sinx))] x趋于0 lim(x->0) 1-x^2-e^(-x^2)/x*sin^(3)2x lim x趋向无穷 {（2x^3+x)sin (2/x) }/ x^2+1