yveonorEns
yveonorEns
08-01-2017
Mathematics
contestada
Classify the sequence
{3, -1, 1/3, -1/9}
Respuesta :
kaevras
kaevras
08-01-2017
Divide by negative 3 each time.
3 / -3 = -1
-1 / -3 = 1/3
1/3 / -3 = -1/9
Answer Link
apologiabiology
apologiabiology
08-01-2017
geometric, times -1/3 each time
the common ratio is -1/3
first term is 3
the explicit formula is
[tex]a_n=3( \frac{-1}{3})^{n-1} [/tex] or
[tex]a_n=-9( \frac{-1}{3})^{n} [/tex]
with the domain being {1,2,3,4}
Answer Link
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