To find the smallest positive term in an arithmetic series, utilize the formula Sn = (n[2a1 + (n-1)d]) / 2. In this formula, Sn represents the sum of the first n terms, n denotes the number of terms, a1 is the first term, and d is the common difference between consecutive terms. Rearranging this formula allows for the identification of the smallest positive term effectively.
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cristo said:You could rearrange the formula [tex]S_n=\frac{n[2a_1+(n-1)d]}{2}[/tex], where n is the numbers of terms, Sn is the sum of the first n terms, d is the difference between the ith and (i+1)th term, and a1 is the first term of the series.