#823 · Algebra · Sequences & series

Sum of linear series

Find the sum of the first 15 terms of the series whose nth term is $4 n + 1$ .

~2 minAnswer checked instantlysum of serieslinear term

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. IV. Arithmetical Progression, Examples IV.a, No. 23

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