Suppose that an is an infinite series with partial sum SÃ = 7 - 2 n=1 N² 10 16 What are the values of Σan and Σan? n=1 n=5 (Give an exact answer. Use symbolic notation and fractions where needed. Enter DNE if the sum does not exist.) 10 £... Σ an = n=1 16 Σ n=5 an = What is the value of a3? (Give an exact answer. Use symbolic notation and fractions where needed.) a3 = Find a general formula for an. (Express numbers in exact form. Use symbolic notation and fractions where needed.) an =

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