Question: Suppose that you are computing the QR factorization of the matrix [1 1 1 2 1 3 1 4 A = 4 16 by Householder

Suppose that you are computing the QR factorization of the matrix 

[1 1 1 2 1 3 1 4 A = 4 16

[1 1 1 2 1 3 1 4 A = 4 16 by Householder transformations. How many Givens rotations would be required to compute the QR factorization of A?

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