Arithmetic Series

#Math

Topics

• Arithmetic Sequence

$\displaystyle S_{n}=\sum_{i = 1}^{n}a_{i}=\frac{n}{2}(2a_{1}+(n-1)d)$

• $\displaystyle S_{n}$ is the series sum
• $\displaystyle a_{i}$ is the $\displaystyle i$th value of the sequence
• $\displaystyle n$ is the number of terms in the series