# Author's software

#### Being tested

Modulo

Writing functions:

mod(a, b)

Finds the remainder from the division of a by b. This command is equivalent to the command of a % b. This is also the remainder.

One of the most fundamental mathematical operations is division, which allows you to divide one number by another, getting the result in the form of a rational number or decimal fraction. But an important aspect when working with division is also the determination of the remainder of the division. The mathematical function "remainder of division" is an operation performed when dividing one number by another, returning the remainder of this operation.

The remainder of the division is defined as the number that remains after one number is divided by another as much as possible. In short, the remainder of the division is the "extra" part that did not fit during the division.

To indicate the remainder of the division, a special mathematical symbol is used - "%". For example, if we consider dividing the number 7 by 3, then the result of this division will be 2, and the remainder of the division will be 1. That is, 7% 3 = 1.

The application and use of the "division remainder" function are multifaceted and find their application in various fields. One of the most common uses of division remainder is working with arrays. In programming, for example, the remainder of a division can be used to determine whether a number is even or odd. Also, the remainder of the division is used when solving tasks related to calendars or schedules, where it is necessary to determine the day of the week or check the periodicity.

The remainder of the division can also be used to determine the periodicity of some mathematical functions, including trigonometric functions. In such cases, the remainder of the division helps us determine where a certain section of the function is repeated.

In conclusion, the remainder of division function is an important tool in mathematics and programming. Its application is widely used in various fields, from working with arrays to analyzing the periodicity of functions. Knowledge and understanding of this mathematical function allows you to effectively solve problems and find new aspects in various fields of science and technology.

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