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franklinkaylieg3873
29.06.2019 •
Mathematics
Khaled and wilma were asked to find an explicit formula for the sequence 1, 3, 9, 27. khaled said the formula is f(n)=1*3^n-1 and wilma said the formula is f(n)=1*3^n. which one of them is right?
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Ответ:
ANSWER
EXPLANATION
The given sequence is 1, 3, 9, 27...
The first term of this sequence is
The common ratio is
The explicit formula for this geometric sequence is
We substitute the first term and the common ratio to obtain,
Ответ:
Step-by-step explanation:
(x-5)(x-5)