Precalculus Examples

$\sum_{i = 1}^{8} 12 \cdot 0.25$

Step 1

Simplify the summation.

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Step 1.1

Multiply $12$ by $0.25$ .

$3$

Step 1.2

Rewrite the summation.

$\sum_{i = 1}^{8} 3$

$\sum_{i = 1}^{8} 3$

Step 2

The formula for the summation of a constant is:

$\sum_{k = 1}^{n} c = c n$

Step 3

Substitute the values into the formula.

$(3) (8)$

Step 4

Multiply $3$ by $8$ .

$24$

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