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Nilai dari ∑ n = 2 5 ​ ( ( − 1 ) n + n ) adalah…

Nilai dari  adalah…

  1. 13

  2. 14

  3. 15

  4. 16

  5. 17

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M. Mariyam

Master Teacher

Mahasiswa/Alumni Institut Pertanian Bogor

Jawaban terverifikasi

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Pembahasan

begin mathsize 14px style begin inline style sum from n equals 2 to 5 of end style begin inline style space end style left parenthesis left parenthesis negative 1 right parenthesis to the power of n plus n right parenthesis space equals left parenthesis left parenthesis negative 1 right parenthesis squared plus 2 right parenthesis plus left parenthesis left parenthesis negative 1 right parenthesis cubed plus 3 right parenthesis space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space plus left parenthesis left parenthesis negative 1 right parenthesis to the power of 4 plus 4 right parenthesis plus left parenthesis left parenthesis negative 1 right parenthesis to the power of 5 plus 5 right parenthesis space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals left parenthesis 1 plus 2 right parenthesis plus left parenthesis negative 1 plus 3 right parenthesis space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space plus left parenthesis 1 plus 4 right parenthesis plus left parenthesis negative 1 plus 5 right parenthesis space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 14 space end style

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Nilai dari ∑ n = 2 5 ​ i 2

54

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