Question: Need help... Let {an } be a sequence of real numbers. Prove: The sequence {on } diverges to -oo if and only if lim inf

Need help...

Need help... Let {an } be a sequence of real numbers. Prove:

Let {an } be a sequence of real numbers. Prove: The sequence {on } diverges to -oo if and only if lim inf a, = lim sup an - 0o 17-+00 17-100

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