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Please could someone tell me the way to find the smallest positive term of an arithmetic series (C1 level) as I cannot find a formula anywhere.
Thank you.
Cathy
Thank you.
Cathy
Okay. Thanks for your help.You could rearrange the formula [tex] S_n=\frac{n[2a_1+(n-1)d]}{2} [/tex], where n is the numbers of terms, S_{n} is the sum of the first n terms, d is the difference between the ith and (i+1)th term, and a_{1} is the first term of the series.