lim(1+3/x^2)^sin^2x x趋近正无穷lim(1+3/x^2)^sin^2x x趋近正无穷

lim(x(sin)^2) 求极限 （（sin(x^3+x^2-x)+sin x) /x x→0 已知lim sinx/x=1 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趋向0) x^2 / (sin^2) * x/3 lim(x趋向0) x^2 / (sin^2) * x/3 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(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), 求极限 lim sin(x^2 * sin (1/x))/x x->0求极限 lim sin(x^2 * sin (1/x))/x x->0 lim(1+3/x^2)^sin^2x x趋近正无穷lim(1+3/x^2)^sin^2x x趋近正无穷 x趋向于无穷时 lim (3x-1)/(x^3 乘以 sin(1/x^2 )) lim(3x-5)/(x^3sin(1/x^2)) 其中x趋于无穷 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)sin(x+1)/2(x+1) 求极限：lim(x*sin(1/x))^2 lim x->0(sqrt(sin(1/x^2)) 求极限