જો $\int \frac{x}{(a+x)^5} dx = \frac{1}{k(a+x)^4}(f(x)) + c$ હોય, તો $\frac{f(-a)}{ak} = $

  • A
    $\frac{1}{3}$
  • B
    $\frac{1}{2}$
  • C
    $\frac{5}{6}$
  • D
    $\frac{1}{4}$

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જો $\int \frac{(x - 1)^2}{(x^2 + 1)^2} dx = \tan^{-1} (x) + g(x) + k$ હોય,તો $g(x)$ ની કિંમત શોધો.

નીચેના વિધાનો $(A)$ અને $(B)$ ધ્યાનમાં લો:
$(A) \int_a^b \frac{d}{d x}(f(x)) d x = \frac{d}{d x} \int_a^b f(x) d x$
$(B) \frac{d}{d x} \left( \int f(x) d x \right) = f(x) + C$
નીચેનામાંથી કયું સાચું છે?

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