Calculus Examples

$\sum_{k = - 2}^{2} 2 k + 1$

Step 1

Expand the series for each value of $k$ .

$2 \cdot - 2 + 1 + 2 \cdot - 1 + 1 + 2 \cdot 0 + 1 + \dots + 2 \cdot 2 + 1$

Step 2

Simplify the expanded form.

$5$