已知数列{xn}满足x1=1,2xn+1-xn=n-2/n(n+1)(n+2)) (1)设an=xn-1/n(n+1),
已知数列{Xn}满足x1=1/2,xn+1=1/(1+xn),n∈N+,证明:|xn+1-xn|≤1/6*(2/5)^n
已知数列{xn}满足x1=3,x2=x1/2,...,xn=1/2(xn-1+xn-2),n=3,4,...,则xn等于
已知数列xn满足x1=4,x(n+1)=(xn^2-3)/(2xn-4)
Xn+1-Xn=(-1/2)^n n∈N+ 且X1=1 求Xn
已知x1≠1,x1>0,xn+1=xn(xn^2+3)/(3xn^2+1)(n∈N),求证:数列{xn}或者对任意正整数
X1=1,Xn=1+Xn/(1+Xn),n=1,2…,求Xn
数列{an}满足X1=a>0,Xn+1=1/2(Xn+a/Xn),n∈N*,若数列{Xn}的极限存在且大于0,求Xn(n
已知数列{xn}由下列条件确定:x1=a>0,xn+1=1/2(xn+a/xn)(n∈N+)求证
设数列{xn}满足xn+1=xn/2+1/xn,X0>0,n=0,1,2,3,...证明数列{xn}极限存在并求出其极限
数列{Xn}中,X1=1/2,X(n+1)=2Xn/(1+Xn^2),求Xn
设X1>0,xn+1=3(1+xn) / 3+xn (n=1,2…)求lim xn.
设数列{ Xn } 满足│Xn+1-Xn│≤k│Xn-Xn-1│,n=2,3,...(0