March 2026
Intermediate
432 pages
21h 5m
English
Content preview from Machine Learning, 2nd Edition
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Appendix BThe Condition Number of a Matrix with Respect to a Norm
Condition Number with Respect to a General Norm
Suppose we are interested in solving a system of linear equations
in a context where 
is an invertible matrix which is known exactly and 
is a vector which is known through some kind of observational process which is subject to error. That is, there is a true value of 
and an observed value of 
which we write 
where 
is some vector representing the observational error (
is the difference between the true value of 
and the value of resulting from our observational process).
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