设lim(x→1)sin(x∨2-1)/x∨3-a=2/3.求a

求极限 （（sin(x^3+x^2-x)+sin x) /x x→0 已知lim sinx/x=1 设lim(x→0)[(x+1)(1+2x)(1+3x)+a]/x=6 求a的值. lim(x^2+x+a)/(x-1)=3 X趋向于1 求a 求极限lim(x-->0)x^2 sin(1/x), lim(x→∞)[(a x^2)/x+1]+bx=lim(x→∞)(a x^2)+bx(x+1) / x+1=lim(x 设极限lim(x平方-2x+a)/x-3 =5 ,x趋近于3,求a lim x趋于0 [sin(a+x)sin(a+2x)-sin^2a]/x 求极限 设lim（(x^2+1)/(x+1) -ax-b）=0,求a,b. x趋向无穷大 设lim（(x^2+1)/(x+1) -ax-b）=0,求a,b.x趋向无穷大 求极限 1,lim(x→∞）（sinx/x +100) 2,lim(x→∞）xtan1/x 3,lim(x→1）sin^ 求极限lim[(a^x+b^x)/2]^1/x (x→0)a>0,b>0 lim【x→0】[(a^x+b^x)/2]^( 设当x->0,lim((ln(1+f(x)/x))/(a^x-1))=A,(a>0,a不等于1),求当x->0,lim(