Sequences and Series

57%

An arithmetic series has first term $a\,$ and common difference $d$ .

Prove that the sum of the first $n\,$ terms of the series is

\frac{1}{2}n(2a + (n-1)d)

[4]

57%

An arithmetic series has first term $a\,$ and common difference $d$ .

Prove that the sum of the first $n\,$ terms of the series is

\frac{1}{2}n(2a + (n-1)d)

[4]

Sequences and Series Questions