3.7 Determine the Laplace transform of the following functions: ∗(a) x1(t) = 25 cos(4πt + 30◦) δ(t) (b) x2(t) = 25 cos(4πt + 30◦) δ(t − 0.2) (c) x3(t) = 10 sin(3t) t u(t) (d) x4(t) = d2 dt2 [e−4t u(t)]

step-by-step explanation:

12475909

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for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: