Mathematical problems: write the general formula of this sequence: 1 / 2,1 / 4, - 5 / 8,13 / 16, - 29 / 32,61 / 64

Mathematical problems: write the general formula of this sequence: 1 / 2,1 / 4, - 5 / 8,13 / 16, - 29 / 32,61 / 64

Denominator 2 ^ n
Molecules - (2-3), 4-3, - (8-3), 16-3, - (32-3), 64-3
That is, (2-3) (- 1), (2 ^ 2-3) (- 1) ^ 2, (2 ^ 3-3) (- 1) ^ 3, (2 ^ 4-3) (- 1) ^ 4, (2 ^ 5-3) (- 1) ^ 5, (2 ^ 6-3) (- 1) ^ 6
That is, (2 ^ n-3) (- 1) ^ n
an=[(2^n-3)(-1)^n]/2^n
=(2^n-3)/(-2)^n

Elden Ring Premiere

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