MATHEMATICS 9

  Coordinate Geometry for class 9 notes is given here. Get the complete concept of coordinate geometry such as cartesian system, coordinate points, how to plot the points in the coordinate axes, quadrants with signs, and so on. Go through the below article to learn coordinate geometry for class 9. Cartesian System Cartesian plane & Coordinate Axes Cartesian Plane : A cartesian plane is defined by  two perpendicular number lines , A horizontal line ( x − a x i s )   and a vertical line  ( y − a x i s ) . These lines are called coordinate axes. The Cartesian plane extends infinitely in all directions. Origin : The coordinate axes intersect each other at right angles,  The p oint of intersection  of these two axes is called Origin. To know more about Cartesian System,  visit here . Quadrants The cartesian plane is divided into four equal parts, called  quadrants.  These are named in the order as I, II, III, and IV starting wit...

  Introduction to Number Systems Numbers Number: Arithmetical value representing a particular quantity. The various types of numbers are Natural Numbers, Whole Numbers, Integers, Rational Numbers, Irrational Numbers, Real Numbers, etc. Natural Numbers Natural numbers (N)  are positive numbers i.e. 1, 2, 3 ..and so on. Whole Numbers Whole numbers  (W)  are 0, 1, 2,..and so on. Whole numbers are all Natural Numbers including ‘0’. Whole numbers do not include any fractions, negative numbers, or decimals. Integers Integers are the numbers that include whole numbers along with the negative numbers. Rational Numbers A number ‘r’ is called a rational number if it can be written in the form p/q, where p and q are integers and q ≠ 0. Irrational Numbers Any number that cannot be expressed in the form of p/q, where p and q are integers and q≠0, is an irrational number. Examples: √2, 1.010024563…, e, π Real Numbers Any number which can be represented on the number line is a Real...

  Polynomial derived from the words “poly” which means “many” and the word “nominal” which means “term”. In maths, a polynomial expression consists of variables that are also known as indeterminates and coefficients. The coefficients involve the operations of subtraction, addition, non-negative integer exponents of variables, and multiplication. A detailed   polynomials Class 9 notes   are provided here along with some important questions so that students can understand the concept easily. Polynomials Class 9 Topics The topics and subtopics covered in class 9 polynomials chapter 2 include: Introduction Polynomials in One Variable Zeros of Polynomials Remainder Theorem Factorization of Polynomials Algebraic Identities Polynomial Definition Polynomials are expressions with one or more terms with a non-zero coefficient. A polynomial can have more than one term. In the polynomial, each expression in it is called a  term .  Suppose x 2  + 5x + 2 i...