3.a Find the values of x E R so that the matrix A 3 0 0 0 x 2 0 2 x  is positive definite. b. Find a matrix B = AAT factorization of matrix B = 3 0 0 0 4 2 0 2 4

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter6: Linear Systems
Section6.3: Matrix Algebra
Problem 78E
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3.a Find the values of x E R so that the matrix A

3 0 0
0 x 2
0 2 x

 is positive definite.

b. Find a matrix B = AAT factorization of matrix B =

3 0 0
0 4 2
0 2 4
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