Answer: In 118, use Definition 4.1.1 to find +{ f (t)}
Chapter 4, Problem 6(choose chapter or problem)
In Problems 1–18, use Definition 4.1.1 to find \(\mathscr{L}\{f(t)\}\).
\(f(t)=\left\{\begin{array}{lr}\sin t, & 0 \leq t<\pi / 2 \\0, & t \geq \pi / 2\end{array}\right.\)
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