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A comment on Don’t invert that matrix (2010). Parent comment
Numerical linear algebra has a long and vast history. You really do need specialized information that your undergrad linear algebra classes would not have imparted.
For instance, the condition number is important: https://en.wikipedia.org/wiki/Condition_number
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Numerical linear algebra has a long and vast history. You really do need specialized information that your undergrad linear algebra classes would not have imparted.
For instance, the condition number is important: https://en.wikipedia.org/wiki/Condition_number