1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Linear Algebra: Denoting an interval

  1. May 25, 2010 #1
    1. The problem statement, all variables and given/known data

    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

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


  2. jcsd
  3. May 25, 2010 #2


    Staff: Mentor

    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]
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook