Arithmetic Sequences
Definition of Arithmetic Sequences
Arithmetic sequences is a sequence that has a fixed difference or difference between two successive tribes.From the above definition, the sequence of the original numbers is a sequence of arithmetic that has the difference between successive terms = 1, the odd number sequence is an arithmetic sequence that has a difference between successive terms = 2.
Medium sequence of triangle numbers, rows of square numbers and sequences of Fibonacci numbers are not arithmetic sequence because the different each successive tribe is not the same.
Formula of Arithmetic Sequences
Un = a + (n - 1)b
Information :
a = The first tribe
b = Different each tribe
n = Number of order of terms
Example of Arithmetic Sequences
Please determine the n th term formula of 1, 7, 13, 19, 25, ...!Answer :
a = 1
b = 7 - 1 = 6
Un = 1 + (n - 1)6
Un = 1 + 6n - 6
Un = 6n - 5
Similarly this article.
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Referensi :
- To'Ali's book math group accounting and sales
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