已知:lim (n→∞) [(n^2+n)/(n+1)-an-b]=1 ,求a,b的值
已知:lim (n→∞) [(n^2+n)/(n+1)-an-b]=1 ,求a,b的值
已知lim[(an^2+5n-2)/(3n+1)-n]=b,求a,b的值
lim (n→∞) (n^2/(an+b)-n^3/(2n^2-1))=1/4 求a,b
求极限lim(n→∞)(a^n+(-b)^n)/(a^n+1+(-b)^n+1)
已知lim(n的平方+1/n+1+an-b)=1,求a,b的值
lim[(n^2+1)/(n+1)-an-b]=o求a和b的值 lim[1/(a-1)^n]=0 求a的范围
已知lim((an2+5n-2)/(3n+1) -n)=b 求a b的值
求一道极限题lim[(a^1/n+b^1/n)/2]^n n→∞
已知lim n→无穷 (an^2+bn+5)/(3n-2)=2,求a,b的值
lim(n2+2n+2)/(n+1)-an)=b,求a,b
已知:1/n(n+1)=A/n + B/(n+1) 求A,B的值
若lim(2n+(an^2-2n+1)/(bn+2))=1 求a/b的值