For Each of the Following Functions, Determine If the Graph $f(x)=4^{-x} \cos 3 x$

For each of the following functions, determine if the graph shows damped oscillation. If so, state the damping factor.
(a) $f(x)=4^{-x} \cos 3 x$
(b) $f(x)=x+\cos x$
(c) $f(x)=-5 x \cos 3 x$
(d) $f(x)=4 \sin \frac{x}{3}$
(e) $F(x)=0.45 e^{-0.1 x} \cos 2 x$

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(a)
(b) N...

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