જો $\int f(x) dx = g(x)$ હોય, તો $\int x^3 f(x^2) dx$ કોના બરાબર છે?

  • A
    $\frac{1}{2} [x^2 g(x^2) - \int g(x^2) d(x^2)]$
  • B
    $\frac{1}{2} [x^2 [f(x)]^2 - \int [g(x)]^2 dx]$
  • C
    $\frac{1}{2} [x^2 g(x) - \int g(x) d(x)]$
  • D
    $\frac{1}{2} [x^2 g(x^2) + \int g(x^2) d(x^2)]$

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