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/(Xn+1),Sn=Y1+Y2+...+Yn,则aSn+Pn=_____

数列与不等式的题目已知数列Xn满足 Xn=-(1/2)Xn-1^2 +Xn-1 +1,1 已知数列Xn,满足X1=1,Xn= 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xn-xn^2=sin(xn-1/n),证明xn的趋向正无穷的极限为0 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/(Xn+1),Sn=Y1+Y2+...+Yn,则aSn+Pn=_____ 已知首项为x1的数列（xn）满足xn+1=(a*xn)/(xn +1) (a 为常数). 已知数列x1,……xn,且满足x1=2,xn+1=1-xn分之1,求x2010 若递增数列Xn满足X1=1/2,且4Xn*Xn+1=(Xn+Xn+1-1/2)^2,求Xn 设数列{xn}满足x1=1 xn=(4xn-1+2)/(2xn-1+7) 数列｛Xn｝满足条件|Xn+1-Xn|≤1/n^2 证明Xn极限的存在 已知数列xn满足x1=4 x(n+1)=(xn^2-3)/(2xn-4)（1）求证 xn>3 （2）求证 x(n+1) 数列与不等式综合问题已知数列{Xn}满足X1=4,Xn+1=(Xn^2-3)/(2Xn-4)（1）求证Xn>3（2）求证Xn+1>Xn（3）求数列{Xn}的通项公式（题目中Xn+1,n+1为角标） 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n都满足xn不等于xn+1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n都满足xnxn+1 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 设数列{ Xn } 满足│Xn+1-Xn│≤k│Xn-Xn-1│,n=2,3,...(0 已知各项都是正数的等比数列{Xn},满足(Xn)^an=(Xn+1)^an+1=(Xn+2)an+2.证明数列{已知各项都是正数的等比数列{Xn},满足(Xn)^an=(Xn+1)^an+1=(Xn+2)an+2.(1)证明数列{1/an}是等差数列(2)若1/a1=1,1/a8=15,当m>1时,不等 已知数列xn满足x1=4,x(n+1)=（xn^2-3）/(2xn-4）求数列｛xn｝的通项公式可证得（1）xn>3(2)x(n+1) 高一数学：已知数列xn满足x(n+3)=xn,x(n+2)=(xn+1-xn)的绝对值,若x1=1,x2=a,则数列xn的前2013项和S2013为（a