PPlease be as clear as possible. Thanks
Find Singular Value Decomposition (SVD) of a Matrix
...
[ 5
12 ]
Solution:
A= |
|
A⋅A′
A⋅A′= |
|
Find Eigen vector for A⋅A′
|A⋅A′-λI|=0
|
= 0 |
∴(25-λ)×(144-λ)-60×60=0
∴(3600-169λ+λ2)-3600=0
∴(λ2-169λ)=0
∴λ(λ-169)=0
∴λ=0or(λ-169)=0
∴ The eigenvalues of the matrix A⋅A′ are given by
λ=0,169,
1. Eigenvectors for λ=169
v1= |
|
2. Eigenvectors for λ=0
v2= |
|
For Eigenvector-1 (0.4167,1), Length L = √0.41672+12=1.0833
So, normalizing gives
u1=(0.41671.0833,11.0833)=(0.3846,0.9231)
For Eigenvector-2 (-2.4,1), Length L = √(-2.4)2+12=2.6
So, normalizing gives u2=(-2.42.6,12.6)=(-0.9231,0.3846)
A′⋅A
A′⋅A= |
|
Find Eigen vector for A′⋅A
|A′⋅A-λI|=0
|
= 0 |
∴(169-λ)=0
∴(-λ+169)=0
∴-(λ-169)=0
∴(λ-169)=0
∴ The eigenvalues of the matrix A′⋅A are given by λ=169,
1. Eigenvectors for λ=169
v1= |
|
For Eigenvector-1 (1), Length L = √12=1
So, normalizing gives v1=(11)=(1)
Solution
∴Σ= |
|
= |
|
∴U= | [u1,u2] | = |
|
V is found using formula vi=1σiAT⋅ui
∴V= |
|
----------------------------------------===============================--------------------------------------------------------
Solution:
A= |
|
A⋅A′
A⋅A′= |
|
Find Eigen vector for A⋅A′
|A⋅A′-λI|=0
|
= 0 |
∴(289-λ)=0
∴(-λ+289)=0
∴-(λ-289)=0
∴(λ-289)=0
∴ The eigenvalues of the matrix A⋅A′ are given by λ=289,
1. Eigenvectors for λ=289
v1= |
|
For Eigenvector-1 (1), Length L = √12=1
So, normalizing gives u1=(11)=(1)
A′⋅A
A′⋅A= |
|
Find Eigen vector for A′⋅A
|A′⋅A-λI|=0
|
= 0 |
∴(64-λ)×(225-λ)-120×120=0
∴(14400-289λ+λ2)-14400=0
∴(λ2-289λ)=0
∴λ(λ-289)=0
∴λ=0or(λ-289)=0
∴ The eigenvalues of the matrix A′⋅A are given by
λ=0,289,
1. Eigenvectors for λ=289
v1= |
|
2. Eigenvectors for λ=0
v2= |
|
For Eigenvector-1 (0.5333,1), Length L = √0.53332+12=1.1333
So, normalizing gives
v1=(0.53331.1333,11.1333)=(0.4706,0.8824)
For Eigenvector-2 (-1.875,1), Length L = √(-1.875)2+12=2.125
So, normalizing gives
v2=(-1.8752.125,12.125)=(-0.8824,0.4706)
Solution
∴Σ= |
|
= |
|
∴U= | [u1] | = |
|
V is found using formula vi=1σiAT⋅ui
∴V= |
|
-----------------------------------------------==========================------------------------------------------------------------
Find Singular Value Decomposition (SVD) of a Matrix
...
[0 1
1 0
2- 2]
Solution:
A= |
|
A⋅A′
A⋅A′= |
|
Find Eigen vector for A⋅A′
|A⋅A′-λI|=0
|
= 0 |
∴(1-λ)((1-λ)×(8-λ)-2×2)-0(0×(8-λ)-2×(-2))+(-2)(0×2-(1-λ)×(-2))=0
∴(1-λ)((8-9λ+λ2)-4)-0(0-(-4))-2(0-(-2+2λ))=0
∴(1-λ)(4-9λ+λ2)-0(4)-2(2-2λ)=0
∴(4-13λ+10λ2-λ3)-0-(4-4λ)=0
∴(-λ3+10λ2-9λ)=0
∴-λ(λ-1)(λ-9)=0
∴λ=0or(λ-1)=0or(λ-9)=0
∴ The eigenvalues of the matrix A⋅A′ are given by
λ=0,1,9,
1. Eigenvectors for λ=9
v1= |
|
2. Eigenvectors for λ=1
v2= |
|
3. Eigenvectors for λ=0
v3= |
|
For Eigenvector-1 (-0.25,0.25,1), Length L =
√(-0.25)2+0.252+12=1.0607
So, normalizing gives
u1=(-0.251.0607,0.251.0607,11.0607)=(-0.2357,0.2357,0.9428)
For Eigenvector-2 (1,1,0), Length L = √12+12+02=1.4142
So, normalizing gives
u2=(11.4142,11.4142,01.4142)=(0.7071,0.7071,0)
For Eigenvector-3 (2,-2,1), Length L = √22+(-2)2+12=3
So, normalizing gives u3=(23,-23,13)=(0.6667,-0.6667,0.3333)
A′⋅A
A′⋅A= |
|
Find Eigen vector for A′⋅A
|A′⋅A-λI|=0
|
= 0 |
∴(5-λ)×(5-λ)-(-4)×(-4)=0
∴(25-10λ+λ2)-16=0
∴(λ2-10λ+9)=0
∴(λ-1)(λ-9)=0
∴(λ-1)=0or(λ-9)=0
∴ The eigenvalues of the matrix A′⋅A are given by λ=1,9,
1. Eigenvectors for λ=9
v1= |
|
2. Eigenvectors for λ=1
v2= |
|
For Eigenvector-1 (-1,1), Length L = √(-1)2+12=1.4142
So, normalizing gives v1=(-11.4142,11.4142)=(-0.7071,0.7071)
For Eigenvector-2 (1,1), Length L = √12+12=1.4142
So, normalizing gives v2=(11.4142,11.4142)=(0.7071,0.7071)
Solution
∴Σ= |
|
= |
|
∴U= | [u1,u2,u3] | = |
|
V is found using formula vi=1σiAT⋅ui
∴V= |
|
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