Question: Exam 2 Fall, 10 points Use the formula for the sum of a geometric sequence to write the following sum in closed form. Here, n

Exam 2 Fall, 10 points Use the formula for the sum of a geometric sequence to write the following sum in closed form. Here, n 2 1 is an integer. 1 1 3n 30-It (-1)n-2 3n-2 - . . . + (-1)2-1 32 + 3 + ( - 1 ) n =

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