Calculus Examples

$\sum_{i = 1}^{3} x_{i}$

Step 1

Expand the series for each value of $i$ .

$x_{i} + x_{i} + x_{i}$

Step 2

Substitute the values back and simplify $x_{i} + x_{i} + x_{i}$ .

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Step 2.1

Add $x_{i}$ and $x_{i}$ .

$2 x_{i} + x_{i}$

Step 2.2

Add $2 x_{i}$ and $x_{i}$ .

$3 x_{i}$