Shortest Distance from Curve to Origin: How to Minimize x^2+y^2?

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SUMMARY

The discussion focuses on finding the shortest distance from the hyperbola defined by the equation x² - y² = 1 to the origin (0,0). The key insight is that the distance can be minimized by expressing the distance formula, x² + y², in terms of a single variable. The conclusion drawn is that the minimum distance is indeed 1, which can be confirmed through calculus or geometric interpretation.

PREREQUISITES
  • Understanding of hyperbolic equations, specifically x² - y² = 1.
  • Knowledge of distance formulas in Cartesian coordinates.
  • Familiarity with calculus concepts, particularly optimization techniques.
  • Ability to manipulate equations to express variables in terms of one another.
NEXT STEPS
  • Study optimization techniques in calculus, focusing on minimizing functions.
  • Learn how to express multivariable functions in terms of a single variable.
  • Explore the properties of hyperbolas and their geometric interpretations.
  • Practice solving similar problems involving distance minimization from curves to points.
USEFUL FOR

Students in mathematics, particularly those studying calculus and analytic geometry, as well as educators seeking to enhance their teaching methods for optimization problems.

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Homework Statement

Find the shortest distance from [tex]x^{2}-y^{2}=1[/tex] and the origin.

I was gone when my professor taught on this. I just want some hints to get started...

Homework Equations





The Attempt at a Solution

I graphed it and it's pretty easy to see that the answer is one. I just don't know how to prove it...
 
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The square of distance is x^2+y^2, so you have to minimize that. Can you express x^2+y^2 in terms of only one variable?
 

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