यदि $u = \int e^{ax} \cos bx \, dx$ और $v = \int e^{ax} \sin bx \, dx$ है,तो $(a^2 + b^2)(u^2 + v^2) = $

  • A
    $2e^{ax}$
  • B
    $(a^2 + b^2)e^{2ax}$
  • C
    $e^{2ax}$
  • D
    $(a^2 - b^2)e^{2ax}$

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