设a1=a2=1,an+1=an+an-1,n=2,3…令xn=an+1/an,证明数列xn收敛于1/2(1+√5)
问题描述:
设a1=a2=1,an+1=an+an-1,n=2,3…令xn=an+1/an,证明数列xn收敛于1/2(1+√5)
答
设a1=a2=1,an+1=an+an-1,n=2,3…令xn=an+1/an,证明数列xn收敛于1/2(1+√5)