$A$ particle of unit mass undergoes one-dimensional motion such that its velocity varies according to $v(x) = \beta x^{-2n}$,where $\beta$ and $n$ are constants and $x$ is the position of the particle. The acceleration of the particle as a function of $x$ is given by:

  • A
    $-2n \beta^2 x^{-2n-1}$
  • B
    $-2n \beta^2 x^{-4n-1}$
  • C
    $-2n \beta^2 x^{-2n+1}$
  • D
    $-2n \beta^2 x^{-4n+1}$

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