Constant in Maths Last Updated : 24 Jul, 2025 Comments Improve Suggest changes Like Article Like Report In mathematics, a constant is a value that does not change. It is fixed and remains the same throughout a given problem or equation. Constants can appear in various forms, such as specific numbers, variables with known values, or symbols representing unchanging values.Some examples for constants are:Pi (π): The ratio of the circumference of a circle to its diameter, approximately 3.14159, is a constant because it has the same value for any circle.Euler’s Number (e): A mathematical constant approximately equal to 2.71828, used in exponential growth and logarithmic functions.Zero (0): In equations, 0 is a constant because it does not change value.Speed of Light (c): In physics, the speed of light is constant at approximately 299,792,458 meters per second.Constant Term in Algebraic ExpressionIn an algebraic expression, a constant term is a term that does not contain any variables and has a fixed value. It is simply a number that stands alone in the expression.For example, in algebraic expression 2x2 + 3x - 11, -11 is constant.How to Recognize a Constant in Algebraic Expression?To recognize a constant in an algebraic expression, Look for terms without variables. For example, in the expression 3x + 5, the constant is 5 because it is a standalone number, not multiplied by any variable.Types of ConstantIn mathematics, constants are values that do not change and remain fixed throughout mathematical operations or equations. They can be classified into several types based on their properties:Fixed Constants: These are constants with specific, unchanging values that remain constant across all calculations. Examples include mathematical constants like π (pi) or Euler's number, e.Mathematical Constants: These constants arise from mathematical principles and have significant mathematical importance. They often appear in formulas, equations, and mathematical identities. Examples include Euler's number (e), the golden ratio (φ), and the imaginary unit (i).Physical Constants: Physical constants are values that represent fundamental physical quantities and are used in scientific calculations and equations. Examples include the speed of light in vacuum (c), the gravitational constant (G), and the Planck constant (h).Universal Constants: Universal constants are values that are consistent across different mathematical and scientific disciplines. They are widely used in various mathematical and scientific contexts. Examples include the speed of light (c) and Planck's constant (h).Variable Constants: Variable constants are values that remain constant within a specific mathematical context or equation but may vary in different contexts or equations. They are often represented by symbols and can change value depending on the situation. Examples include constants used in algebraic equations, such as a, b, and c in a quadratic equation.Read the Difference between constant and variables here.Read More,Constant FunctionWhat is Arithmetic?Arithmetic OperationsExamples on Constant in MathematicsExample 1: Identify the constant term in the given algebraic expression: 3x2 + 2xy − 7.Solution:Given Expression, 3x2 + 2xy − 7Constant term in the expression is −7Example 2: Compute the value of the given algebraic expression: 5a + 3 when a = 2.Solution:Given Expression, 5a + 3 when a = 2Substituting a = 2 into the expression, = 5(2) + 3 = 10 + 3 = 13Example 3: Solve the equation 2x + 8 = 16 for the value of x.Solution:Given Expression,2x + 8 = 16⇒ 2x + 8 - 8 = 16 -8⇒ 2x = 8⇒ 2x/2 = 8/2⇒ x = 4 Comment More infoAdvertise with us Next Article What are Numbers? R riarawal99 Follow Improve Article Tags : Mathematics School Learning Math-Concepts Similar Reads Maths Mathematics, often referred to as "math" for short. It is the study of numbers, quantities, shapes, structures, patterns, and relationships. It is a fundamental subject that explores the logical reasoning and systematic approach to solving problems. Mathematics is used extensively in various fields 5 min read Basic ArithmeticWhat are Numbers?Numbers are symbols we use to count, measure, and describe things. They are everywhere in our daily lives and help us understand and organize the world.Numbers are like tools that help us:Count how many things there are (e.g., 1 apple, 3 pencils).Measure things (e.g., 5 meters, 10 kilograms).Show or 15+ min read Arithmetic OperationsArithmetic Operations are the basic mathematical operations—Addition, Subtraction, Multiplication, and Division—used for calculations. These operations form the foundation of mathematics and are essential in daily life, such as sharing items, calculating bills, solving time and work problems, and in 9 min read Fractions - Definition, Types and ExamplesFractions are numerical expressions used to represent parts of a whole or ratios between quantities. They consist of a numerator (the top number), indicating how many parts are considered, and a denominator (the bottom number), showing the total number of equal parts the whole is divided into. For E 7 min read What are Decimals?Decimals are numbers that use a decimal point to separate the whole number part from the fractional part. This system helps represent values between whole numbers, making it easier to express and measure smaller quantities. Each digit after the decimal point represents a specific place value, like t 10 min read ExponentsExponents are a way to show that a number (base) is multiplied by itself many times. It's written as a small number (called the exponent) to the top right of the base number.Think of exponents as a shortcut for repeated multiplication:23 means 2 x 2 x 2 = 8 52 means 5 x 5 = 25So instead of writing t 9 min read PercentageIn mathematics, a percentage is a figure or ratio that signifies a fraction out of 100, i.e., A fraction whose denominator is 100 is called a Percent. In all the fractions where the denominator is 100, we can remove the denominator and put the % sign.For example, the fraction 23/100 can be written a 5 min read AlgebraVariable in MathsA variable is like a placeholder or a box that can hold different values. In math, it's often represented by a letter, like x or y. The value of a variable can change depending on the situation. For example, if you have the equation y = 2x + 3, the value of y depends on the value of x. So, if you ch 5 min read Polynomials| Degree | Types | Properties and ExamplesPolynomials are mathematical expressions made up of variables (often represented by letters like x, y, etc.), constants (like numbers), and exponents (which are non-negative integers). These expressions are combined using addition, subtraction, and multiplication operations.A polynomial can have one 9 min read CoefficientA coefficient is a number that multiplies a variable in a mathematical expression. It tells you how much of that variable you have. For example, in the term 5x, the coefficient is 5 — it means 5 times the variable x.Coefficients can be positive, negative, or zero. Algebraic EquationA coefficient is 8 min read Algebraic IdentitiesAlgebraic Identities are fundamental equations in algebra where the left-hand side of the equation is always equal to the right-hand side, regardless of the values of the variables involved. These identities play a crucial role in simplifying algebraic computations and are essential for solving vari 14 min read Properties of Algebraic OperationsAlgebraic operations are mathematical processes that involve the manipulation of numbers, variables, and symbols to produce new results or expressions. The basic algebraic operations are:Addition ( + ): The process of combining two or more numbers to get a sum. For example, 3 + 5 = 8.Subtraction (−) 3 min read GeometryLines and AnglesLines and Angles are the basic terms used in geometry. They provide a base for understanding all the concepts of geometry. We define a line as a 1-D figure that can be extended to infinity in opposite directions, whereas an angle is defined as the opening created by joining two or more lines. An ang 9 min read Geometric Shapes in MathsGeometric shapes are mathematical figures that represent the forms of objects in the real world. These shapes have defined boundaries, angles, and surfaces, and are fundamental to understanding geometry. Geometric shapes can be categorized into two main types based on their dimensions:2D Shapes (Two 2 min read Area and Perimeter of Shapes | Formula and ExamplesArea and Perimeter are the two fundamental properties related to 2-dimensional shapes. Defining the size of the shape and the length of its boundary. 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These lines are called coordinate axes of the plane and the plane is usually called the Cartesian plane. But in real life, we do not have such a plane. In real life, we need some extra information su 6 min read Trigonometry & Vector AlgebraTrigonometric RatiosThere are three sides of a triangle Hypotenuse, Adjacent, and Opposite. The ratios between these sides based on the angle between them is called Trigonometric Ratio. The six trigonometric ratios are: sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec).As give 4 min read Trigonometric Equations | Definition, Examples & How to SolveTrigonometric equations are mathematical expressions that involve trigonometric functions (such as sine, cosine, tangent, etc.) and are set equal to a value. 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In mathematics, inverse trigonometric functions are also known as arcus functions or anti-trigonometric functions. The inverse trigonometric functions are the inverse functions of basic trigonometric function 11 min read Inverse Trigonometric IdentitiesInverse trigonometric functions are also known as arcus functions or anti-trigonometric functions. These functions are the inverse functions of basic trigonometric functions, i.e., sine, cosine, tangent, cosecant, secant, and cotangent. It is used to find the angles with any trigonometric ratio. Inv 9 min read CalculusIntroduction to Differential CalculusDifferential calculus is a branch of calculus that deals with the study of rates of change of functions and the behaviour of these functions in response to infinitesimal changes in their independent variables.Some of the prerequisites for Differential Calculus include:Independent and Dependent Varia 6 min read Limits in CalculusIn mathematics, a limit is a fundamental concept that describes the behaviour of a function or sequence as its input approaches a particular value. Limits are used in calculus to define derivatives, continuity, and integrals, and they are defined as the approaching value of the function with the inp 12 min read Continuity of FunctionsContinuity of functions is an important unit of Calculus as it forms the base and it helps us further to prove whether a function is differentiable or not. A continuous function is a function which when drawn on a paper does not have a break. 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It's the first step in making sense of informat 5 min read What is Inferential Statistics?Inferential statistics is an important tool that allows us to make predictions and conclusions about a population based on sample data. Unlike descriptive statistics, which only summarize data, inferential statistics let us test hypotheses, make estimates, and measure the uncertainty about our predi 7 min read Measures of Central Tendency in StatisticsCentral tendencies in statistics are numerical values that represent the middle or typical value of a dataset. Also known as averages, they provide a summary of the entire data, making it easier to understand the overall pattern or behavior. These values are useful because they capture the essence o 11 min read Set TheorySet theory is a branch of mathematics that deals with collections of objects, called sets. A set is simply a collection of distinct elements, such as numbers, letters, or even everyday objects, that share a common property or rule.Example of SetsSome examples of sets include:A set of fruits: {apple, 3 min read PracticeNCERT Solutions for Class 8 to 12The NCERT Solutions are designed to help the students build a strong foundation and gain a better understanding of each and every question they attempt. This article provides updated NCERT Solutions for Classes 8 to 12 in all subjects for the new academic session 2023-24. The solutions are carefully 7 min read RD Sharma Class 8 Solutions for Maths: Chapter Wise PDFRD Sharma Class 8 Math is one of the best Mathematics book. It has thousands of questions on each topics organized for students to practice. RD Sharma Class 8 Solutions covers different types of questions with varying difficulty levels. The solutions provided by GeeksforGeeks help to practice the qu 5 min read RD Sharma Class 9 SolutionsRD Sharma Solutions for class 9 provides vast knowledge about the concepts through the chapter-wise solutions. These solutions help to solve problems of higher difficulty and to ensure students have a good practice of all types of questions that can be framed in the examination. Referring to the sol 10 min read RD Sharma Class 10 SolutionsRD Sharma Class 10 Solutions offer excellent reference material for students, enabling them to develop a firm understanding of the concepts covered. in each chapter of the textbook. As Class 10 mathematics is categorized into various crucial topics such as Algebra, Geometry, and Trigonometry, which 9 min read RD Sharma Class 11 Solutions for MathsRD Sharma Solutions for Class 11 covers different types of questions with varying difficulty levels. Practising these questions with solutions may ensure that students can do a good practice of all types of questions that can be framed in the examination. This ensures that they excel in their final 13 min read RD Sharma Class 12 Solutions for MathsRD Sharma Solutions for class 12 provide solutions to a wide range of questions with a varying difficulty level. With the help of numerous sums and examples, it helps the student to understand and clear the chapter thoroughly. Solving the given questions inside each chapter of RD Sharma will allow t 13 min read Like