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Michelley03
What does "linear" mean?
of, relating to, resembling, or having a graph that is a line and especially a straight line
It depends on the context; a linear equation is one of the form \(y=mx+b\), \(m,b\in\mathbb{R}\), whereas a linear operator \(L\) is one such that \(L(af+bg)=aL(f)+bL(g)\).