gaokao 2018 Q17

gaokao · China · national-II-arts 12 marks Arithmetic Sequences and Series Multi-Part Structured Problem on AP

Let $S _ { n }$ be the sum of the first $n$ terms of an arithmetic sequence $\left\{ a _ { n } \right\}$. Given $a _ { 1 } = - 7 , S _ { 3 } = - 15$.
(1) Find the general term formula for $\left\{ a _ { n } \right\}$;
(2) Find $S _ { n }$ and the minimum value of $S _ { n }$.

Let $S _ { n }$ be the sum of the first $n$ terms of an arithmetic sequence $\left\{ a _ { n } \right\}$. Given $a _ { 1 } = - 7 , S _ { 3 } = - 15$.\\
(1) Find the general term formula for $\left\{ a _ { n } \right\}$;\\
(2) Find $S _ { n }$ and the minimum value of $S _ { n }$.

Paper Questions

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