- #1
MathematicalPhysicist
Gold Member
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we have a sequence {a_n}, such that for every n natural, a_n>0 and it satisfies:
lim (a_n*a_n+1)=1
prove/disprove:
if {a_n} is bounded then {a_2n} converges.
i haven't found any counter example, is this statement true or false, if is false then what's the counter example?
p.s
couldn't you say that this sequence is bassically a sequence of a positive number and its reciprocal?
lim (a_n*a_n+1)=1
prove/disprove:
if {a_n} is bounded then {a_2n} converges.
i haven't found any counter example, is this statement true or false, if is false then what's the counter example?
p.s
couldn't you say that this sequence is bassically a sequence of a positive number and its reciprocal?