Exercise 4 The set B = is a basis for the subspace U = {(x, y, z) | 2x – 3y– z = 0}. 1. U is either a line or plane. Which one is it? 2. Is B an orthogonal basis? If not, use the Gram-Schmidt algorithm to find an orthogonal ba for U. 3. Find U-.
Exercise 4 The set B = is a basis for the subspace U = {(x, y, z) | 2x – 3y– z = 0}. 1. U is either a line or plane. Which one is it? 2. Is B an orthogonal basis? If not, use the Gram-Schmidt algorithm to find an orthogonal ba for U. 3. Find U-.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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[Orthogonal Complement] How do you solve question 3?
For 2, I got { (1, 1, -1) , (4/3, 1/3, 5/3) } as the orthongal basis.
Do I write U-perp = { vER^n | (1, 1, -1) dot u = 0 and (4/3, 1/3, 5/3) dot u = 0 for all uEU }

Transcribed Image Text:Exercise 4
1
2
The set B =
is a basis for the subspace U =
%3 {(х, у, 2) | 2х — Зу-2%3D0;.
1. U is either a line or plane. Which one is it?
2. Is B an orthogonal basis? If not, use the Gram-Schmidt algorithm to find an orthogonal basis
for U.
3. Find U-.

Transcribed Image Text:Definition 3
Let U be a subspace of R". Let U- = {v€R" |v•u=0 for all u e U}.
U- is called the orthogonal complement of U (& often shortened to “U-perp").
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