यदि $I_m = \int x^m \cos n x \, dx = g(x) - \frac{m(m-1)}{n^2} I_{m-2}$ है, तो $g(x) = $

  • A
    $\frac{x^m \sin n x}{n} + \frac{m(m-1) x^{m-1} \cos n x}{n^2}$
  • B
    $\frac{x^m \cos n x}{n} + \frac{x^{m-1} m(m-1)}{n^2} \sin n x$
  • C
    $\frac{m}{n} \sin n x + \frac{m}{n^2} x^{m-1} \cos n x$
  • D
    $\frac{x^m \sin n x}{n} + \frac{m}{n^2} x^{m-1} \cos n x$

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