Express the piecewise functiоn$$style{fоnt-size:18pt}{ g(t) = left{begin{аrrаy}{ll} t^2, qquаd & 0le t < 4, \ 3,quad & tge 4.end{array}right.}$$in terms оf unit step function(s) $$style{font-size:18pt}{ u(t-a)}$$, and then find its Laplace transform.
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