Dealing with matrices is often taught in university (although there is probably a very high correlation between self-taught programmers and library users). But

Dealing with matrices is often taught in university (although there is probably a very high correlation between self-taught programmers and library users). But this is really another version of the same question: When faced with a task you don't understand, do you Google "How to do X", or do you search "library to do X in Y language".