L Language Structures(1 20=20 points) Directions: Choose the item that best completes each of the following sentences. When Grandma Wang became ill, the girl often A fitted in B worked out C held back D helped out
1 Find F(s) if f(t) = (a)(t-3);(b)4t u(t-3); (c)4 cos to(t-3). 2 Obtain partial-fraction expansions for each of the following rational functions, and find the corresponding time functions:
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