1. ||(3, 4)|| = 5.

  2. ||(1, 2, 3)|| = Sqrt(14).

  3. ||(1, 2) - (2, 0)|| = ||(-1, 2)|| = Sqrt(5).

  4. ||(1, 2, 3) - (3, 2, 1)|| = ||(-2, 0, 2)|| = Sqrt(8).

  5. We are searching for points P = (x, y) such that

    ||(P - (1, 3)|| = ||P - (3, 1)||

    That is,

    Missing equation

Copyright c 1995 by Frank Wattenberg, Department of Mathematics, Montana State University, Bozeman, MT 59717