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Write the sum using summation notation. 1 4 27 n 9) + + + + 3 7 n+4 Write the first five terms of

Write the sum using summation notation. 1 4 27 n 9) + + + + 3 7 n+4 Write the first five terms of the sequence defined recursively. = 1 10) a = 20; anan-1 +3

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