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Algebra

Laws of Logarithms

Science > Mathematics > Algebra > Logarithms > Laws of Logarithm In this article, we shall study the laws of logarithm and their proofs. Laws of logarithm are very important in mathematics and every student should have confidence in using them. Laws of Product: loga(mn) = logam + logan, where a, m, n are positive […]

Categories
Coordinate Geometry

Equation of Line in Space

In this article, we shall study to write vector and cartesian equation of a line in Space. Theorem – 1 (Vector Equation of Line in Space): The vector equation of a straight line passing through a fixed point with position vector a  and parallel to a given vector b is r = a + λ b. Where […]

Categories
Applied Mathematics

Jacobi’s Method to Find Solution of Simultaneous Equations

In this article, we shall study Jacobi’s Method to find the solution of simultaneous equations. Example 01: Solve the following equations by Jacobi’s Method, performing three iterations only. 20x + y – 2z = 17, 3x + 20 y – z + 18 = 0, 2x – 3y + 20 z = 25. Solution: Given […]

Categories
Coordinate Geometry

Distance Formula

In this article, we shall study to find the distance between two points using the distance formula when the coordinates of the two points are given. Example 01: Find the distance between the following pairs of points : (2, 3), (4, 1) Let A(2, 3) ≡ (x1, y1) and B(4, 1) ≡ (x2, y2) be […]

Categories
Trigonometry

Use of Trigonometric Functions Values of Standard Angles

In this article, we shall study to find the value of trigonometric expressions involving standard angles. Trigonometric functions values of some standard angles are given below: Evaluate the following: Example 01: sin20c + sin2(π/6)c + sin2(π/3)c + sin2(π/2)c   = (0)2 + (1/2)2 + (√3/2)2 + (1)2 = 0 + 1/4 + 3/4 + 1 […]

Categories
Coordinate Geometry

To Find Condition When Relation Between Slopes f lines is Given

Science > Mathematics > Pair of Straight Lines > To Find the Condition When Relation Between Slopes is Given In this article, we shall discuss problems to find the condition when the relation between slopes of lines represented by a joint equation is given. Example – 18: If the slope of one of the lines […]

Categories
Coordinate Geometry

To Find Value of Constant When Relation Between Slopes is Given

Science > Mathematics > Pair of Straight Lines > To Find Value of Constant When Relation Between Slopes is Given In this article, we shall study to solve problems to find the value of constant or to prove the given relation when the relation between slopes of the line represented by the joint equation is […]

Categories
Applied Mathematics

The solution of an Equation: Bisection Method

In this article, we shall study the use of the bisection method to solve an equation. Intermediate Value Theorem : If a function f is continuous on closed interval [a, b] and f (a). f (b) < 0, i.e. ƒ (a) and ƒ (b) are opposite signs, then there exists at least one c ∈ […]

Categories
Coordinate Geometry

Equation of Circle (Centre Radius Form)

A circle is defined as the locus of all the points in a plane, which are at a fixed distance from a fixed point. The fixed point is called the centre of the circle and the fixed distance is called the radius of the circle. The radius of a circle is denoted by the letter […]

Categories
Coordinate Geometry

Condition That Line is Represented by Homogeneous Equation

Science > Mathematics > Pair of Straight Lines > Condition That Line is Represented by Homogeneous Equation In this article, we shall study problems to find the condition when one of the lines represented by a homogeneous equation is given. ALGORITHM : Write the auxiliary equation of joint equation. Find the slope of given line […]