Calculus Examples

$\sum_{k = 5}^{4} 2 \cdot 5 k$

Step 1

Simplify the summation.

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Step 1.1

Multiply $5$ by $2$ .

$10 k$

Step 1.2

Rewrite the summation.

$\sum_{k = 5}^{4} 10 k$

Step 2

Since the summation's lower limit is greater than the summation's upper limit, it is an empty summation and its value is defined to be zero.

$0$