Q2. Find all values of a and ß so that the matrix 2 a -1 1 a A =B

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Q1. Suppose that A and B are positive definite n x n matrices. Which of the
following matrices must be positive definite? Justify.
(1) A³
(ii) AB
Q2. Find all values of a and ß so that the matrix
a
A =B
l-1 1
2
1
is positive definite.
Q3. Prove or disprove: If A is invertible, then A'A is positive definite.
Transcribed Image Text:Q1. Suppose that A and B are positive definite n x n matrices. Which of the following matrices must be positive definite? Justify. (1) A³ (ii) AB Q2. Find all values of a and ß so that the matrix a A =B l-1 1 2 1 is positive definite. Q3. Prove or disprove: If A is invertible, then A'A is positive definite.
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