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aleksklad [387]
3 years ago
9

What formula can be used to describe the sequence ?

Mathematics
2 answers:
Ne4ueva [31]3 years ago
6 0
I think this is the 3 one... can i have brainliest?
kherson [118]3 years ago
5 0
<h2>Answer:</h2>

The  formula which can be used to describe the sequence is:

                f(x+1)=2f(x)

<h2>Step-by-step explanation:</h2>

The sequence is given by:

         -2\dfrac{2}{3},-5\dfrac{1}{3},-10\dfrac{2}{3},-21\dfrac{1}{3},-42\dfrac{2}{3},.....

The terms of the sequence could also be written as:

\dfrac{-8}{3},\dfrac{-16}{3},\dfrac{-32}{3},\dfrac{-64}{3},\dfrac{-128}{3},....

This means that the first term of the sequence is:

f(1)=\dfrac{-8}{3}

The second term of the sequence is:

f(2)=\dfrac{-16}{3}\\\\i.e.\\\\f(2)=2\times \dfrac{-8}{3}\\\\i.e.\\\\f(2)=2f(1)

f(3)=\dfrac{-32}{3}\\\\i.e.\\\\f(3)=2\times \dfrac{-16}{3}\\\\i.e.\\\\f(3)=2f(2)

and so on.

                 Hence, the formula is given by:

           f(x+1)=2f(x)

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