Calculus Examples

$\sum_{n = 2}^{6} \frac{(n - 1)}{2}$

Expand the series for each value of $n$ .

$\frac{2 - 1}{2} + \frac{3 - 1}{2} + \frac{4 - 1}{2} + \dots + \frac{6 - 1}{2}$

Simplify the expanded form.

$\frac{15}{2}$

The result can be shown in multiple forms.

Exact Form:

$\frac{15}{2}$

Decimal Form:

$7.5$

Mixed Number Form:

$7 \frac{1}{2}$