The set of all values of $$$x$$$ for which $$$\sum_{n=1}^{\infty} \frac{n \cdot 2^{n}}{x^{n}}$$$ converges is

only $x=0$

$-2< x< 2$

$|x|> 2$

$|x| \geq 2$

Calculus

College Board

Exam No：AP Calculus Unit 10 Questions Set Year：2024 Question No：36

Answer:

10.1 Defining Convergent and Divergent Infinite Series

10.13 Radius and Interval of Convergence of Power Series

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