(Click on graph to enlarge) a. Represent f(t) using a combination of Heaviside step functions. Use h(t – a) for the Heaviside function shifted a units horizontally. f(t) = help (formulas) b. Find the Laplace transform F(s) = L {f(t)} for s +0. help (formulas) F(s) = L {f(t)} =

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