Find the angle between the vector v=(1,1,1,-1) to the subspace U from the previous problems ал Write the answer as a/b for the angle b

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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I need help with the screenshot problem, this was the previous problem the screenshot is refering to: 

Find the basis of the solution space U of the equation  x-y+z-w=0

of the form

e_1=(a,1,0,0)  e_2=(b,0,1,0). e_3=(c,0,0,1)

for some numbers a, b, c

Write the answer as a,b,c.  (the answer for this problem is 1, -1, 1) 

 

Find the angle between the vector v=(1,1,1,-1) to the subspace U from the previous problems
ал
Write the answer as a/b for the angle
b
Transcribed Image Text:Find the angle between the vector v=(1,1,1,-1) to the subspace U from the previous problems ал Write the answer as a/b for the angle b
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