Question: 3. (a) [8 points] Let o E R be some parameter. Define the matrix A : 2 For which values of o is the matrix

3. (a) [8 points] Let o E R be some parameter. Define the matrix A : 2 For which values of o is the matrix A invertible? Note: You do not need to compute the inverse of A for these values of a. (b) [7 points] Let A be some invertible square matrix and let B = (AT . A) 1 . AT. Use determinant properties toward expressing det(B) in terms of det (A). Justify your

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