Product and composition of functions

Product of Functions: The product of two functions f(x) and g(x) is denoted by f(x) * g(x) and is defined as (f * g)(x) = f(x) * g(x) for all x in the domain of both f and g. For example, if f(x) = x^2 and g(x) = sin(x), then (f * g)(x) = x^2…

Greatest integer

The greatest integer function, denoted by ⌊x⌋ or sometimes by [x], is a mathematical function that returns the largest integer that is less than or equal to its argument x. For example, ⌊4.5⌋ = 4 and ⌊-2.7⌋ = -3. Formally, the greatest integer function is defined as follows: For any real number x, let n…

Absolute value

The absolute value of a real number is the distance of the number from zero on the number line. It is denoted by two vertical bars surrounding the number, like |x|. More formally, the absolute value of a real number x is defined as: |x| = x, if x is greater than or equal to…

Power

Power can refer to a variety of things depending on the context in which it is used. Here are a few possible interpretations: What is Required power Required power refers to the amount of power needed to perform a specific task or achieve a particular goal. In engineering and mechanics, required power is often calculated…

Logarithmic

Logarithmic refers to a mathematical concept related to the logarithm function. The logarithm function is the inverse of the exponential function and is used to express the relationship between numbers in terms of their powers. In other words, the logarithm of a number is the power to which another fixed number, called the base, must…

Onto and one-to-one functions

Onto and one-to-one are both terms used to describe functions in mathematics. An onto function (also called a surjective function) is a function in which every element in the range is mapped to by at least one element in the domain. In other words, for every element y in the range, there exists at least…

Invertible functions

An invertible function is a function that has an inverse function. In other words, a function f(x) is invertible if and only if there exists another function g(x) such that g(f(x))=x for all x in the domain of f. Invertible functions have a number of important properties. For example, they are one-to-one, meaning that no…

Range of functions

In mathematics, the range of a function is the set of all possible output values that the function can produce when it is applied to the elements of its domain. It is sometimes called the image of the function. The range is a subset of the codomain, which is the set of all possible output…

Codomain

In mathematics, the codomain of a function is the set of all possible values that the function can output or map to. It is the set of all possible values of the dependent variable of the function, which corresponds to the output of the function given a particular input. For example, if we have a…

Functions as mappings

Functions are mathematical objects that take one or more inputs and produce an output based on some rule or relationship between the inputs and the output. In other words, functions can be thought of as mappings that associate each input with a corresponding output. For example, consider the function f(x) = 2x + 1. This…