यदि $f(x)$ और $g(x)$ समाकलनीय फलन हैं, तो $[\int f(x) dx][\int g(x) dx]$ किसके बराबर है?

  • A
    $\int [f(x)g'(x) + f'(x)g(x)] dx$
  • B
    $\int [f(x)g'(x) - f'(x)g(x)] dx$
  • C
    $\int [f(x) \int g(x) dx + g(x) \int f(x) dx] dx$
  • D
    $\int [f(x) \int g(x) dx - g(x) \int f(x) dx] dx$

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