Choose the Graph Which Matches the Function $$f ( x ) = 3 ^ { - x } \cos 4 x$$

question 178

Multiple Choice

Choose the graph which matches the function.
- $$f ( x ) = 3 ^ { - x } \cos 4 x$$

• A) Damping factor \(= 4\), damping occurs as \(x \rightarrow \infty\)
• B) Damping factor \(= 3 ^ { - x }\), damping occurs as \(x \rightarrow 0\)
• C) Damping factor \(= 3 ^ { - x }\), damping occurs as \(\mathrm { x } \rightarrow \infty\).
• D) No damping

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