Precalculus Examples

$\sum_{n = 1}^{5} 4 n + 1$

Step 1

Expand the series for each value of $n$ .

$4 \cdot 1 + 1 + 4 \cdot 2 + 1 + 4 \cdot 3 + 1 + \dots + 4 \cdot 5 + 1$

Step 2

Simplify the expanded form.

$65$