jaxheisjax6003 jaxheisjax6003 29-04-2024 Mathematics Answered Let f(t) = (4 - t²)u(t) + (t² + 2t - 15)u(t - 3) + (12 - 2t)u(t - 6). Express f(t) in piecewise form, sketch the graph of f(t), and find L{f(t)}.