Chapter 8.1, Problem 3TFR

True-False Review

For Questions (a)-(j), decide if the given statement is true or false, and give a brief justification for your answer. If true, you can quote a relevant definition or theorem in fact from the text. If false, provide an example, illustration, or brief explanation of why the statement is false.

If $L_1$ and $L_2$ are linear differential operators, then $L_1{L}_2=L_2{L}_1$.