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# Parametric Equations

In plane, parametric equation is a pair of Functions which is given by:
⇒x = f (s) and y = g (s); which is used to define the ‘x’ and ‘y’ coordinate graph of the given curve in the plane.
In mathematics, a Set of equations which is used to represent a set of quantities as unambiguous Functions of a number of independent variables, said to be parameters.
For example, Circle equation in the Cartesian coordinate is given by:
r2 = x2 + y2, and Circle equation for the Parametric Equations is given by:
⇒x = r cos s;
⇒y = r sin s;
Basically the parametric equation is represented as non unique, so the same quantities are defined by number of different parameterizations. Now we will see two dimensional and three dimensional parametric equations.
In the two dimensional parametric equations Parabola and circle are involved.
Parabola: The equation of parabola is given by:
⇒y = x2;
The given equation is parameterising using the other parameter, when we use another parameter then the equation of parabola is:
⇒x = s and,
⇒y = s2.
In case of circle, the ordinary Equation of Circle is given by:
⇒x2+ y2 = 1;
Here we obtained the equation which is parameterized.
Using the parameterize version it is very easy to get points on a plot. Let’s talk about the three dimensional parametric equations. ‘Helix’ include in the three dimensional parametric equation.
Generally parametric equation is used to define the curve in higher- dimensional space.
For example: x = a cos (s),
⇒y = a sin (s);
⇒z = bs;
Given equation defines a three dimensional curve, the radius of Helix ‘a’ and riser to 2b unit per turn.

## Graphing Parametric Equations

In a coordinate plane, parametric equation is a pair of Functions which is given by:
⇒ x = f (a) and y = g (a); which is used to define the ‘x’ and ‘y’ coordinate graph of given curve in the plane.
In mathematics, a Set of equations which is used to denote a set of quantities as unambiguous Functions is known as parameters.
For example, the equation of C...Read More

## Graph Parametric Curves

In coordinate plane we study different types of equations such as linear equation, quadratic equation. Here we will discuss parametric equation and also see how to graph parametric curves. Parametric equation can be defined as a pair of Functions which is given by:
⇒ x = f (a) and y = g (a); which is used to define ‘x’ and ‘y’ coordinate graph of given cur...Read More

## Parametric Equations to Rectangular Form

Parametric equations are used to represent mathematical shapes or curves. Suppose a curve is being defined by equations in Cartesian plane or x – y plane, then we represent 'x' and 'y' as Functions of any factor or parameter “t”. To convert the Parametric Equations to rectangular form equation, first we need to remove the factor “t” from two equa...Read More