Infinite Sum Practice

Calculus Level 3

Find the value of \[S= \dfrac{\cos 0}{e^0 \cdot 0!}+ \dfrac{\cos 1}{e^1 \cdot 1!}+\dfrac{\cos 2}{e^2 \cdot 2!}+ \cdots \]

\(\textbf{Details and Assumptions}\)

  • In \(\cos n\), \(n\) is considered to be in \(\textbf{radians}\).
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