已知lim((n²+cn+1)/(an²+bn)-4n)=5,求常数a,b,c
已知lim[(3n^2+cn+1)/(an^2+bn)-4n]=5,求常数a、b、c的值
已知数列an,bn,cn满足[a(n+1)-an][b(n+1)-bn]=cn
lim(n->无穷)[(3n^2+cn+1)/(an^2+bn)-4n]=5
a,b为常数.lim(n->无穷)an^2+bn+2/2n-1=3 求a,b
lim (n→∞) [(an^2+bn+c)/(2n+5)]=3,求a,b
已知an=n,bn=4^n-1数列cn的通项公式cn=an*bn求cn的sn
已知数列an=4n-2和bn=2/4^(n-1),设Cn=an/bn,求数列{Cn}的前n项和Tn
已知lim n→无穷 (an^2+bn+5)/(3n-2)=2,求a,b的值
数列极限的题目已知lim(n趋向无穷大)(5n-根号(an^2-bn+c))=2,求a,b的值
已知a b 是常数 lim(a根号(2n^2+n+1) -bn))=1 则a+b=
lim(5n-根号(an^2+bn+c))=2,求实数a,b,c
是否存在常数a、b、c,使等式1*(n^2-1^2)+2*(n^2-2^2)...+n(n^2-n^2)=an^4+bn