Chapter 12: Q. 4 (page 816)

The sum $S_{n}$ of the first $n$ terms of an arithmetic sequence $\{a_{n}\}$ whose first term is $a_{1}$ can be found using the formula $S_{n} = \frac{n}{2} (a_{1} + a_{n})$ .

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The sum $S_{n}$ of the first $n$ terms of an arithmetic sequence $\{a_{n}\}$ whose first term is $a_{1}$ can be found using the formula $S_{n} = \frac{n}{2} (a_{1} + a_{n})$ .

Step 2. Calculation

The statement " the sum $S_{n}$ of the first $n$ terms of an arithmetic sequence $\{a_{n}\}$ whose first term is $a_{1}$ can be found using the formula $S_{n} = \frac{n}{2} (a_{1} + a_{n})$ " is true.

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The sum $S_{n}$ of the first $n$ terms of an arithmetic sequence $\{a_{n}\}$ whose first term is $a_{1}$ can be found using the formula $S_{n} = \frac{n}{2} (a_{1} + a_{n})$ .

Short Answer

Step by step solution

Step 1. Given information

Step 2. Calculation

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The sum Snof the first nterms of an arithmetic sequence anwhose first term isa1 can be found using the formulaSn=n2a1+an.

Short Answer

Step by step solution

Step 1. Given information

Step 2. Calculation

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Most popular questions from this chapter

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Discrete Mathematics

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The sum $S_{n}$ of the first $n$ terms of an arithmetic sequence $\{a_{n}\}$ whose first term is $a_{1}$ can be found using the formula $S_{n} = \frac{n}{2} (a_{1} + a_{n})$ .