Use a Graphing Utility to Select the Graph the Damping $$f ( x ) = 2 ^ { - x / 4 } \cos x$$

question 44

Multiple Choice

Use a graphing utility to select the graph the damping factor and the function below in the same viewing window.Describe the behavior of the function as x increases without bound.​ $$f ( x ) = 2 ^ { - x / 4 } \cos x$$ ​ ​

• A)​ As x → ∞,f(x)→ ∞.
• B)​ As x → ∞,f(x)→ ∞.
• C)​ As x → ∞,f(x)→ 0.
• D) As x → ∞,f(x)→ 0.
• E)​ As x → ∞,f(x)→ ∞.

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