Converting Parametric Equations to Cartesian Coordinates

In summary, parametric equations use parameters to represent curves and surfaces, while Cartesian equations use x and y coordinates. To convert a parametric equation to Cartesian, use substitution. Parametric equations have benefits such as efficiency and ease of visualization. They can represent all types of curves and surfaces, but some may be easier to represent using one form. To graph a parametric equation, create a table of values and plot them on a graph.
  • #1
calcphys92
3
0
Can anyone tell me how to convert this parametric equation to cartesian (x,y)?

r(t)=<2.5+2cos(4t),2.1+1.23sin(4t)>

I've tried so many ways and they're incorrect.
 
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  • #2
Try isolating the cosine and the sine terms and using sin^2(x)+cos^2(x)=1..ex. sin(4t)=(y-.1)/1.23
 

Related to Converting Parametric Equations to Cartesian Coordinates

What is the difference between parametric and Cartesian equations?

Parametric equations use one or more parameters to represent a curve or surface, while Cartesian equations use x and y coordinates to represent a curve or surface.

How do you convert a parametric equation to a Cartesian equation?

To convert a parametric equation to a Cartesian equation, you can use the substitution method. Substitute the parameter in the parametric equation with the equivalent expression in terms of x and y.

What are the benefits of using parametric equations?

Parametric equations can provide a more efficient way to represent certain curves and surfaces, as they often require fewer terms compared to their Cartesian counterparts. They can also allow for easier visualization and manipulation of complex shapes.

Can parametric equations represent all types of curves and surfaces?

Yes, parametric equations can represent all types of curves and surfaces that can be represented by Cartesian equations. However, certain curves and surfaces may be easier to represent using one form over the other.

How do you graph a parametric equation?

To graph a parametric equation, you can create a table of values by choosing values for the parameter and calculating the corresponding x and y values. Then, plot these points on a graph and connect them to create the curve or surface.

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