Wednesday, June 16, 2010

Types of Equations

Introduction:
An equation is a mathematical statement that asserts the equality of two expressions. [1] Equations consist of the expressions that to be equal on opposite sides of an equal sign, as in
x + 3 = 5\,
9 - y = 7.\,

An equation is the combination of two expressions separated by an equal sign. In the equation the both sides of the equal sign has the same value.
For example,
2 + 18 = 4 * 5

Types of Equations:

Fundamentals and types of Equations are :
Transcendental Equations
If f(x) is a polynomial in x, then f(x) = 0 is an algebraic equation.
Example; x7 + 5x - 2 = 0.
If f(x) contains algebraic and non algebraic functions namely exponential, logarithmic, trigonometric and inverse trigonometric functions then f(x) = 0 is called transcendental equation.
Example; x + log x + sin x=0.
Transcendental equations may have no root, exactly one root or more than one root.
Algebraic Equations:
Fundamental theorem on Algebra.
Every algebraic equation of degree n ≥ 1 has a root real or complex.

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