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rosijanka [135]
3 years ago
7

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

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
6 0
-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)
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(btw names sound cool XD)

we will now try different combinations

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Therefore only the 1st,2nd and 3rd case are possible

Hope this helps.

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