Calculus Examples

$5 \sum_{i = 1}^{5} 9 i - 3 i^{2}$

Step 1

Expand the series for each value of $i$ .

$5 (9 \cdot 1 - 3 \cdot 1^{2} + 9 \cdot 2 - 3 \cdot 2^{2} + 9 \cdot 3 - 3 \cdot 3^{2} + \dots + 9 \cdot 5 - 3 \cdot 5^{2})$

Step 2

Simplify the expanded form.

$- 150$