The total flop count for reducing an n x n matrix to Hessenberg form is approximately:单项选择题

题目图片
A

a. (2/3) n^3 flops, the same as LU decomposition.

B

b. (7/2) n^2 flops (quadratic in n).

C

c. (10/3) n^3 flops for a general matrix; approximately (4/3) n^3 for a symmetric matrix.

D

d. n flops (linear in n).

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