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求极限：lim x→0 ln[1+sin^2(x)]/[e^(x^2)－1] 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→0）x sin 1/x= lim(x趋向0)ln(1+sin x)/x^2 求极限lim(x-->0)x^2 sin(1/x), lim(x(sin)^2) 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(x→0) [1-cos(x^2)]/sin(x^2)tan(x^2)]=? (lim→-1)sin(x+1)/2(x+1) lim x->0(sqrt(sin(1/x^2)) 求极限 lim(x→0)[ln(1+x^2)]/[sin(1+x^2)] 证明lim(x→0)[(x^2）sin(1/x)]=0 求极限lim(x→0) sin(1-x)/(1-x^2) 求极限 lim(x→0){x[sin(1/x^2)-1/sin2x]} lim x→0 (x∧2 cscx sin(1/x)) 求极限 lim(x→0)(cos x)∧(1/sin 2x)＝? 求 lim(x→1)sin(x+1)/x+1 求 lim(x→2)x²-4/x-2