Express the Sum Using Summation Notation $\sum _ { k = 1 } ^ { 6 } ( - k )$

question 6

Multiple Choice

Express the sum using summation notation.
- $\sum _ { k = 1 } ^ { 6 } ( - k )$

• A) \(- 5\)
• B) \(- 30\)
• C) \(- 6\)
• D) \(- 21\)

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Definitions:

Propanoyl Chloride

An acyl chloride derived from propanoic acid, used in organic synthesis to introduce the propanoyl functional group.

Organic Product

A compound or material derived from living organisms, structured primarily around carbon chains or rings.

Methyl Thioacetate

An organosulfur compound used as a chemical intermediate, characterized by a sulfur atom bonded to an acetyl and a methyl group.

One Carbon Compounds

Organic compounds that contain only one carbon atom, often involved in fundamental biochemical processes.