已知数列 Xn满足 X1=3/2,X(n+1)=(3Xn,n=2k+1)或=Xn+n(n=2k),记Yn=X(2n-1)

已知数列xn满足x1=4,x(n+1)=（xn^2-3）/(2xn-4） 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 设数列{ Xn } 满足│Xn+1-Xn│≤k│Xn-Xn-1│,n=2,3,...(0 已知数列{Xn}满足X2=X1/2,Xn=1/2(Xn-1+ Xn-2),n=3,4,…,若n趋于无穷大Xn趋于2,则X 数列{Xn}中,X1=1/2,X(n+1)=2Xn/(1+Xn^2),求Xn 已知数列{Xn}满足Xn+1=Xn^2+Xn,X1=a(a-1),数列{Yn}满足Yn=1/(Xn+1),设Pn=X/( 数列x1,x2...Xn.满足x=1/3 x( n+1)= xn^2+ xn 则1/(x1+1)+1/（x2+1)+.+ 已知函数f（x)=3x/3+x,数列{xn}满足x1≠0,xn=f[x（n-1)](n≥2,n是正整数）求证{1/xn} Xn+1-Xn=(-1/2)^n n∈N+ 且X1=1 求Xn 数列{xn}满足x1=1,xn+1=3xn+3^n,求xn.已知函数f(x)=2x^2,数列{an}满足a1=3,an+