Precalculus Examples

$\sum_{n = 4}^{4} n^{2}$

Step 1

Expand the series for each value of $n$ .

$4^{2}$

Step 2

Raise $4$ to the power of $2$ .

$16$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$