I'm going over properties of limits for series and I'm having trouble proving Arithmetic of infinite series. I know what I'm supposed to do but I can't use standard tricks I'm used to like triangle inequality. Do you have any tips for re - adjusting the epsilon-proofs into M-N proofs?
closed as off-topic by RRL, Cesareo, Leucippus, Lord Shark the Unknown, KReiser Dec 25 '18 at 7:03
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