Concept explainers
For Questions (a)-(d), 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.
(a) The unit step function is defined by
where
(b) If
(c) If
(d) The function
can be expressed as
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Differential Equations and Linear Algebra (4th Edition)
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