Defining curves with parametric equations
0/3
Intros
Lessons
0/7
Examples
Lessons
- Sketching Parametric Curves
Sketch the following parametric curves using table of values and identify the direction of motion: - Finding the Cartesian Equation of the Curve
Eliminate the parameter and find the Cartesian equation of the following curves: - Find the Cartesian Equation of the Curve with Trigonometric Identities
Eliminate the parameter θ and find the Cartesian equation of the following curves:
Free to Join!
StudyPug is a learning help platform covering maths and science from primary all the way to second year university. Our video tutorials, unlimited practice problems, and step-by-step explanations provide you or your child with all the help you need to master concepts. On top of that, it's fun — with achievements, customizable avatars, and awards to keep you motivated.
Easily See Your Progress
We track the progress you've made on a topic so you know what you've done. From the course view you can easily see what topics have what and the progress you've made on them. Fill the rings to completely master that section or mouse over the icon to see more details.Make Use of Our Learning Aids
Earn Achievements as You Learn
Make the most of your time as you use StudyPug to help you achieve your goals. Earn fun little badges the more you watch, practice, and use our service.Create and Customize Your Avatar
Play with our fun little avatar builder to create and customize your own avatar on StudyPug. Choose your face, eye colour, hair colour and style, and background. Unlock more options the more you use StudyPug.
Topic Notes
We have focused a lot on Cartesian equations, so it is now time to focus on Parametric Equations. In this section, we will learn that parametric equations are two functions, x and y, which are in terms of t, or theta. We denote the variables to be parameters. Then we will learn how to sketch these parametric curves. After, we will analyze how to convert a parametric equation to a Cartesian equation. This is known as eliminating the parameter. Sadly, not all parametric equations can be converted to Cartesian in a nice way. This is especially true for parametric equations with sine and cosine. Therefore, we will introduce another way of eliminating the parameter, which involves using trigonometric identities.
Let x and y both be functions in terms of t. Then we call them parametric equations where:
x=f(t)
x=g(t)
Each value of t can determine a point (x,y) that we can use to plot in the graph. Keep in mind that the parameter is not limited to t. Sometimes we use the parameter θ instead.
The main goal in this section is to learn how to sketch the curves, and to eliminate the parameter to find the Cartesian equation
x=f(t)
x=g(t)
Each value of t can determine a point (x,y) that we can use to plot in the graph. Keep in mind that the parameter is not limited to t. Sometimes we use the parameter θ instead.
The main goal in this section is to learn how to sketch the curves, and to eliminate the parameter to find the Cartesian equation
2
videos
remaining today
remaining today
5
practice questions
remaining today
remaining today