lim【sin(x^3-1）|(x^2-1)】x趋向于1

lim(x(sin)^2) 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√（1+x+x^2）-1／x^3+sin^2xhelp！！！ lim【sin(x^3-1）|(x^2-1)】x趋向于1 lim（x ->0）sin x /x ^3+3x lim x趋于0 （x-sin x）/x^3 求极限 （（sin(x^3+x^2-x)+sin x) /x x→0 已知lim sinx/x=1 1、lim（x→1）【(x^3-1)÷（x-1）】2、lim（x→0）【sin(x)÷x】 用罗必达法则解 （见图）lim [(e^x)-1/sin（5x)]x->0lim [1-cos(5x)/1-cos(7x)]x->0lim x->0 [(8^x-7^x-1)/(x^2)-1]lim [1-(6/x)]^x x->∞ lim 7cos(3x)sec(9x)x->pi/2 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) 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 lim(x趋向0) x^2 / (sin^2) * x/3 lim(x趋向0) x^2 / (sin^2) * x/3 lim （x→0）x sin 1/x= lim(sin(x^2*cos(1/x)))/x怎么做? lim(x趋向0)ln(1+sin x)/x^2 求极限lim(x-->0)x^2 sin(1/x),