En resumen

6 ∑ k - 2 = (1 - 2) + (2 - 2) + (3 - 2) + (4 - 2) + (5 - 2) + (6 - 2) k = 1 = 1 + 2 + 3 + 4 + 5 + 6 - 2 * 6 = (6 * 7) / 2 - 12 = 9 4 ∑ 1 / (k ^ 2 + 1) = 1 / 1 + 1 / 2 + 1 / 5 + 1 / 10 + 1 / 17 = 158 / 85 k = 0.

Mejor respuesta

6

6

∑ k - 2 = (1 - 2) + (2 - 2) + (3 - 2) + (4 - 2) + (5 - 2) + (6 - 2)

k = 1 = 1 + 2 + 3 + 4 + 5 + 6 - 2 * 6 = (6 * 7) / 2 - 12 = 9

4

∑ 1 / (k ^ 2 + 1) = 1 / 1 + 1 / 2 + 1 / 5 + 1 / 10 + 1 / 17 = 158 / 85

k = 0.