Linear Algebra: Denoting an interval

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SUMMARY

The discussion centers on defining the domain of a function constrained within a circular area in linear algebra. The correct representation of this domain is given by the equation D = {(x, y) | (x - v_x)² + (y - v_y)² ≤ 4}, indicating a circular disk of radius 2 centered at the point (v_x, v_y). The initial attempt to denote the interval as [(x - v_x)² - (y - v_y)² = 4] is incorrect, as it does not accurately represent the circular region required.

PREREQUISITES
  • Understanding of linear algebra concepts, particularly vector notation.
  • Familiarity with the equation of a circle in Cartesian coordinates.
  • Knowledge of inequalities and their graphical representations.
  • Basic skills in mathematical notation and set theory.
NEXT STEPS
  • Study the properties of circles in Cartesian coordinates.
  • Learn about inequalities and their implications in defining domains of functions.
  • Explore vector representation and operations in linear algebra.
  • Investigate the differences between intervals and regions in mathematical contexts.
USEFUL FOR

Students and educators in mathematics, particularly those focusing on linear algebra and geometry, as well as anyone involved in defining mathematical functions within specific domains.

Niles
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Homework Statement


Hi

I have a position given by the point a vector v points to. Now I have a function, which is only defined for the points on and inside a circle with radius 2 within this point. Can I write this interval as


[tex] x,y \in [(x-v_x)^2-(y-v_y)^2=4][/tex]

?


Niles.
 
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Niles said:

Homework Statement


Hi

I have a position given by the point a vector v points to. Now I have a function, which is only defined for the points on and inside a circle with radius 2 within this point. Can I write this interval as


[tex] x,y \in [(x-v_x)^2-(y-v_y)^2=4][/tex]

?


Niles.

The domain of definition is not an interval, which is a segment of a line. The domain is a circular disk of radius 2, centered at the point (vx, vy). You would write the domain as
[tex]D = \{(x, y) | (x - v_x)^2 + (y - v_y)^2 \leq 4 \}[/tex]
 

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