Let W be the subspace of R³ spanned by the vectors P = 9 8 IN 9 0/0 0/1 0/00 Find the projection matrix P that projects vectors in IR³ onto W.

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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Let W be the subspace of R³ spanned by the vectors
P =
1888
9
∞||0
8
9
4
611 6100
OLA
Find the projection matrix P that projects vectors in IR³ onto W.
Transcribed Image Text:Let W be the subspace of R³ spanned by the vectors P = 1888 9 ∞||0 8 9 4 611 6100 OLA Find the projection matrix P that projects vectors in IR³ onto W.
Expert Solution
Step 1

Given ,

W is subspace of  3  spanned by the vectors  198949 &  8919-49 .

We have to find  projection matrix that projects vectors in 3 onto W .

(.)  Projection of a vector  v onto the subspace spanned by vectors {u1 ,u2} is given by ,

  projwv = ( v·u1)u1·u1u1 +  (v·u2)u1·u2u2

(.)  If  u=u1,u2,u3 &  v=v1,v2,v3 are two vectors then ,

         u·v = u1v1+u2v2+u3v3

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