Sketching the Curve Defined by Parametric Equations

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SUMMARY

The discussion focuses on sketching the curve defined by the parametric equations x=t^3-3t and y=t^2/(1+t^2). Participants suggest that deriving the Cartesian equation is unnecessary; instead, creating a table of values for t and plotting the corresponding (x, y) points is the recommended approach. The critical segment of the curve lies between t = -1.3 and t = 1.3, which is where the most interesting features of the curve can be observed.

PREREQUISITES
  • Understanding of parametric equations
  • Ability to create and interpret tables of values
  • Basic graphing skills
  • Familiarity with plotting points in a Cartesian coordinate system
NEXT STEPS
  • Learn how to convert parametric equations to Cartesian equations
  • Explore techniques for sketching curves from parametric equations
  • Study the behavior of cubic functions and their transformations
  • Investigate the properties of rational functions, particularly in the context of parametric equations
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Students studying calculus, mathematics educators, and anyone interested in understanding the graphical representation of parametric equations.

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Homework Statement



Given the parametric equations,

x=t^3-3t , y=t^2/(1+t^2)

i am asked to sketch this curve.

Homework Equations





The Attempt at a Solution



I am unsure how to get the cartesian equation here..
 
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You don't necessarily need the Cartesian equation. Just make a table of values:

t | x | y

List a bunch of values for t and plot the corresponding (x,y) values.

[Edit] The interesting part of the curve is from about t = -1.3 to t = 1.3 or a little farther.
 
Last edited:

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