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What is the explicit formula 0.5,-0.1,0.02,-0.004,0.0008
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What is the explicit formula 0.5,-0.1,0.02,-0.004,0.0008

User Caffeinated
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1 Answer

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-0.1 / 0.5 = -0.2
0.02 / -0.1 = -0.2

common ratio = -0.2

Geometric Sequence

an = a1 r^(n-1)

an = 0.5 * -0.2^(n-1)
User Medin Piranej
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