已知lim((3n²+cn+1)/(an²+bn)-4n)=5,求常数a、b、c的值
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
已知lim n→无穷 (an^2+bn+5)/(3n-2)=2,求a,b的值
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
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[(an^2+5n-2)/(3n+1)-n]=b,求a,b的值
求数列极限lim=[(an^2+bn-1)/(4n^2-5n+1)]=1/b 求a b的值
若lim(2n+(an^2-2n+1)/(bn+2))=1 求a/b的值