Sketch Parametric Curve and Find Cartesian Equation

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SUMMARY

The discussion focuses on sketching the parametric curve defined by the equations $x=\cos(\theta)$ and $y=\sec(\theta)$ for the interval $0 \leq \theta < \frac{\pi}{2}$. The key conclusion is that the Cartesian equation can be derived by eliminating the parameter, resulting in the equation $y=\frac{1}{x}$. This transformation demonstrates the relationship between the parametric and Cartesian forms of the curve.

PREREQUISITES
  • Understanding of parametric equations
  • Knowledge of trigonometric functions, specifically cosine and secant
  • Familiarity with the concept of parameter elimination
  • Basic skills in sketching curves in a Cartesian plane
NEXT STEPS
  • Study the properties of parametric equations in calculus
  • Learn about the graphical representation of trigonometric functions
  • Explore techniques for parameter elimination in different contexts
  • Investigate the implications of the Cartesian equation $y=\frac{1}{x}$ in various mathematical applications
USEFUL FOR

Students in calculus, mathematics educators, and anyone interested in understanding the relationship between parametric and Cartesian equations, particularly in trigonometric contexts.

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sketch the parametric curve and eliminate the parameter to find the cartesian equation of the curve $x=\cos\left({\theta}\right)$, $y=\sec\left({\theta}\right)$, $0\le \theta < \pi/2$

$y=\frac{1}{\cos\left({\theta}\right)}=\frac{1}{x}$

i sketched the curve. how do i do the second part?
 
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You've already eliminated the parameter when you wrote:

$$y=\frac{1}{\cos(\theta)}=\frac{1}{x}$$
 
oh. wow I am really stupid. hahaha thanks (Tongueout)
 

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