Calculus Examples

$\sum_{2}^{3} 1 \cdot {0.25}^{2} \cdot {0.75}^{1}$

Step 1

Expand the series for each value of $i$ .

$\sum_{2}^{3} 1 (1 + 1)$

Step 2

Substitute the values back and simplify $\sum_{2}^{3} 1 (1 + 1)$ .

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Step 2.1

Add $1$ and $1$ .

$\sum_{2}^{3} 1 \cdot 2$

Step 2.2

Move $2$ to the left of $\sum_{2}^{3} 1$ .

$2 \sum_{2}^{3} 1$