Limit calculations. For each real-valued sequence, explain whether it is convergent, divergent to to, or otherwise divergent (not to too). If it is convergent, find its limit. If it is divergent, find its lim sup and lim inf. (c) Sn = (d) Sn = (-2)".n-1 2nn²2n +1 2 sin n n² + 2

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