User`s guide

Matrix Math Example
(1,1) 1.4142
(1,2) -0.7071
(2,2) 1.2247
(2,3) -0.8165
(3,3) 1.1547
(3,4) -0.8660
(4,4) 1.1180
LU factorization:
L matrix:
(1,1) 1.0000
(2,1) -0.5000
(2,2) 1.0000
(3,2) -0.6667
(3,3) 1.0000
(4,3) -0.7500
(4,4) 1.0000
U matrix:
(1,1) 2.0000
(1,2) -1.0000
(2,2) 1.5000
(2,3) -1.0000
(3,3) 1.3333
(3,4) -1.0000
(4,4) 1.2500
QR factorization:
Q matrix:
(1,1) 0.8944
(2,1) -0.4472
(1,2) 0.3586
(2,2) 0.7171
(3,2) -0.5976
(1,3) 0.1952
(2,3) 0.3904
(3,3) 0.5855
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