Math Problem Statement

Jumlah n suku pertama suatu deret aritmatika di tentukan oleh rumus sn=4n²-n. Suku ke 5 deret tersebut adalah

Solution

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Math Problem Analysis

Mathematical Concepts

Arithmetic Sequence
Summation Formulas

Formulas

S_n = 4n^2 - n
a_n = S_n - S_{n-1}

Theorems

Properties of Arithmetic Sequences

Suitable Grade Level

Grades 8-10