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21.06.2019 •
Mathematics
Which function represents the sequence? f(n)=n+3 f(n)=7n−4 f(n)=3n+7 f(n)=n+7
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Ответ:
Let's have in mind:
f(n) = a1 + (n - 1).r
r = a2 - a1
r = 10 - 3
r = 7
So,
f(n) = a1 + (n - 1).7
f(n) = 3 + (n - 1).7
f(n) = 3 + 7n - 7
f(n) = 7n - 4
Ответ:
In order to get the answer to this question you just divide and you will get the answer for a.
Therefore the answer is "4a."
Hope this helps.