# Author's software

#### Being tested

Summation of numbers (from array)

Writing functions:

summation(x)

Returns the sum of the array elements (if this number).

The mathematical function of summing numbers is one of the fundamental operations widely used in various fields of science, technology and economics. This function allows you to combine two or more numbers into one, getting their sum. The application and use of this feature covers a wide range of tasks.

In mathematics, the summation of numbers plays an important role in solving equations, modeling physical phenomena, and statistical data analysis. For example, when solving algebraic equations, summing numbers allows you to combine different components of an equation, leading to simpler expressions.

In physics, summation plays a key role in the modeling and analysis of physical processes. For example, in mechanics, the summation of forces allows you to determine the total force acting on an object. In electrical circuits, the summation of currents and voltages helps to determine the total electric flow. In statistics, summation allows you to summarize data and get a single measure for their analysis.

In economics, the summation of numbers is used to analyze budgets, sales statistics, and financial indicators. For example, in accounting, the summation of income and expenses allows you to determine the overall financial situation of an enterprise.

The application and use of this mathematical function is not limited only to the scientific and economic spheres. It is also widely used in everyday life. For example, when calculating monthly expenses, summing up income from various sources, or determining the total cost of purchasing goods or services.

Thus, the mathematical function of summing numbers is an integral part of many disciplines and tasks where combining numbers into one value is required for analysis, modeling and decision-making. Its application and use make it possible to reduce complex expressions, simplify calculations and obtain general information necessary to understand and solve problems.

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