Question: Which is the more efficient algorithm: direct least squares based on solving the normal equations by Gaussian Elimination, or using Gram-Schmidt orthonormalization and then solving

Which is the more efficient algorithm: direct least squares based on solving the normal equations by Gaussian Elimination, or using Gram-Schmidt orthonormalization and then solving the resulting triangular system by Back Substitution as in Exercise 5.5.22? Justify= your answer.

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The second method is more efficient Suppose the system is Ax b where A is an m n matrix Cons... View full answer

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