Parametric Curves: Solving and Sketching

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SUMMARY

The discussion focuses on solving and sketching the curve defined by the parametric equations x = 1 + cos(t) and y = 1 + sin²(t). The user successfully isolates cos(t) as cos(t) = x - 1, which is a crucial step in simplifying the equations. By applying the Pythagorean identity cos²(t) + sin²(t) = 1, the user can further manipulate the equations to express y in terms of x. This method effectively allows for the sketching of the curve.

PREREQUISITES
  • Understanding of parametric equations
  • Knowledge of trigonometric identities, specifically the Pythagorean identity
  • Ability to manipulate algebraic expressions
  • Familiarity with graphing techniques for curves
NEXT STEPS
  • Study the relationship between parametric equations and Cartesian coordinates
  • Learn how to apply trigonometric identities in curve sketching
  • Explore graphing software tools for visualizing parametric curves
  • Investigate advanced topics in parametric equations, such as curvature and tangents
USEFUL FOR

Students studying calculus, mathematics enthusiasts, and educators looking to enhance their understanding of parametric curves and their graphical representations.

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Homework Statement


Identify and sketch the curve represented by the parametric equations:

x=1+cost
y=1+sin^2t

Homework Equations


The Attempt at a Solution


I have to isolate t in one of these equations and sub whatever t equals into the other equation right? So how do I get rid of the cos on the left here? I'm not so quick with this trig stuff :?

cost=x-1
Thanks.
 
Physics news on Phys.org
cos(t)=x-1. Now just remember cos(t)^2+sin(t)^2=1.
 

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