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Analytical Geometry Problems

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					             Analytical Geometry Problems
Analytical Geometry Problems

Analytic geometry, or analytical geometry has two different meanings in mathematics.
The modern and advanced meaning refers to the geometry of analytic varieties. This
article focuses on the classical and elementary meaning.

In classical mathematics, analytic geometry, also known as coordinate geometry, or
Cartesian geometry, is the study of geometry using a coordinate system and the
principles of algebra and analysis.

This contrasts with the synthetic approach of Euclidean geometry, which treats certain
geometric notions as primitive, and uses deductive reasoning based on axioms and
theorems to derive truth. Analytic geometry is widely used in physics and engineering,
and is the foundation of most modern fields of geometry, including algebraic, differential,
discrete, and computational geometry.

Usually the Cartesian coordinate system is applied to manipulate equations for planes,
straight lines, and squares, often in two and sometimes in three dimensions.

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  Geometrically, one studies the Euclidean plane (2 dimensions) and Euclidean space (3
dimensions). As taught in school books, analytic geometry can be explained more simply:
it is concerned with defining and representing geometrical shapes in a numerical way and
extracting numerical information from shapes' numerical definitions and representations.

The numerical output, however, might also be a vector or a shape. That the algebra of the
real numbers can be employed to yield results about the linear continuum of geometry
relies on the Cantor–Dedekind axiom.

In analytic geometry, the plane is given a coordinate system, by which every point has a
pair of real number coordinates. The most common coordinate system to use is the
Cartesian coordinate system, where each point has an x-coordinate representing its
horizontal position, and a y-coordinate representing its vertical position. These are
typically written as an ordered pair (x, y).

This system can also be used for three-dimensional geometry, where every point in
Euclidean space is represented by an ordered triple of coordinates (x, y, z). Other
coordinate systems are possible.

On the plane the most common alternative is polar coordinates, where every point is
represented by its radius r from the origin and its angle θ. In three dimensions, common
alternative coordinate systems include cylindrical coordinates and spherical coordinates.

Equations of curves :- In analytic geometry, any equation involving the coordinates
specifies a subset of the plane, namely the solution set for the equation. For example, the
equation y = x corresponds to the set of all the points on the plane whose x-coordinate
and y-coordinate are equal.

These points form a line, and y = x is said to be the equation for this line. In general,

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linear equations involving x and y specify lines, quadratic equations specify conic
sections, and more complicated equations describe more complicated figures.

Usually, a single equation corresponds to a curve on the plane. This is not always the
case: the trivial equation x = x specifies the entire plane, and the equation x2 + y2 = 0
specifies only the single point (0, 0).

In three dimensions, a single equation usually gives a surface, and a curve must be
specified as the intersection of two surfaces (see below), or as a system of parametric
equations. The equation x2 + y2 = r2 is the equation for any circle with a radius of r.

Analytical geometry is the part of the Algebra. It is basically concerned with the points,
lines, circles, and other shapes that are the part of the geometry. In analytical geometry
points are defined as the coordinate of (x,y) and line is basically a set of points it is known
as the linear equation as y=mx+c.

Analytical geometry is also known as the Cartesian geometry or coordinate geometry that
deals with the coordinate system and use the algebra principles. Analytical geometry
deals with the linear equation and sometimes known as linear algebra.

In analytical geometry the plane surface is defined as a coordinate system in which every
point is a set of real number coordinate like (x,y) in this ‘x’ denotes the horizontal position
and y coordinate denotes the vertical position.

Analytical geometry, when deals with a part of the plane, are known as the curve which
can also be shown as a form of algebraic equation of analytical geometry. If we define an
equation of circle in form of algebra it is denoted as x2+y2=r2 where r is the radius of the
circle.




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posted:5/5/2012
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