Page 206 - Elementary_Linear_Algebra_with_Applications_Anton__9_edition
P. 206
negative values of a, b, and c.
(b) What relationship must hold for the point to be farther from the origin than
from the -plane? Make sure that the relationship you state is valid for positive and
negative values of a, b, and c.
17. tell you about the location of the point x in the plane?
(a) What does the inequality
(b) Write down an inequality that describes the set of points that lie outside the circle of
radius 1, centered at the point .
The triangles in the accompanying figure should suggest a geometric proof of Theorem 3.2.1 (f)
18. for the case where Give the proof.
Figure Ex-18
Copyright © 2005 John Wiley & Sons, Inc. All rights reserved.
