linear algebra. will thumbs up if answers are correct and clearly shown. thanks A(a) Find the orthogonal projection of y onto u.Let y =projny=and u=(b) Compute the distance d from y to the line through u and the origin.d=

(a) The orthogonal projection of y onto u is given by, projuy=y.uu.uu now, as…

Answered: Let y= 3 -2 and u= 1 (a) Find the…

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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linear algebra. will thumbs up if answers are correct and clearly shown. thanks

A
(a) Find the orthogonal projection of y onto u.
Let y =
projny=
and u=
(b) Compute the distance d from y to the line through u and the origin.
d=

Branch of mathematics concerned with mathematical structures that are closed under operations like addition and scalar multiplication. It is the study of linear combinations, vector spaces, lines and planes, and some mappings that are used to perform linear transformations. Linear algebra also includes vectors, matrices, and linear functions. It has many applications from mathematical physics to modern algebra and coding theory.

Expert Solution

Step 1

(a)

The orthogonal projection of y onto u is given by,

$p r o j_{u} y = \frac{y . u}{u . u} u$

now, as

$y = [\begin{matrix} 3 \\ - 2 \\ 1 \end{matrix}], u = [\begin{matrix} 2 \\ 1 \\ 1 \end{matrix}] \Rightarrow y . u = (3) (2) + (- 2) (1) + (1) (1) = 6 - 2 + 1 \Rightarrow y . u = 5 a n d, u . u = (2) (2) + (1) (1) + (1) (1) = 4 + 1 + 1 = 6 \Rightarrow u . u = 6$

$n o w, p r o j_{u} y = \frac{5}{6} [\begin{matrix} 2 \\ 1 \\ 1 \end{matrix}] = [\begin{matrix} \frac{5}{3} \\ \frac{5}{6} \\ \frac{5}{6} \end{matrix}]$