Question: 8. The function g is defined by g (x) = f(x) . x . If g (x) = 3xif (x) - 3x sin (3x), which


8. The function g is defined by g (x) = f(x) . x . If g (x) = 3xif (x) - 3x sin (3x), which of the following could be f (x)? a. cos (3x) b. sin (3x) C. - cos (3x) d. 3sin(3x)
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