VincenT377056 VincenT377056

30-10-2022
Mathematics

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-3, -6, -12, -24,..... Explicit Formulaan = -3 + 2 ( n - 1)an = -6 . -12n-1 an = -3 . 2n-1 an = an-1 . 2

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FarisT340255 FarisT340255

30-10-2022

Explicit formula for an geometric sequence:

an = a1 r^n-1

Where:

a1= first term of the sequence

r = common ratio

-3, -6, -12, -24

First-term = -3

ratio = -6/-3 = -12/-6 = -24/-12=2

Replacing:

An = -3 . 2 ^n-1

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