यदि $\int \frac{1-(\cot x)^{2019}}{\tan x+(\cot x)^{2020}} dx = \frac{1}{n} \ln |(f(x))^n + (g(x))^n| + c$ है, तो $n[(f(x))^4 + (g(x))^4]_{x=\frac{\pi}{3}}$ का मान ज्ञात कीजिए।

  • A
    $\frac{10105}{16}$
  • B
    $\frac{10012}{15}$
  • C
    $\frac{20210}{9}$
  • D
    $\frac{10105}{8}$

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फलन का समाकलन कीजिए: $\frac{x-1}{\sqrt{x^{2}-1}}$

यदि $\int \frac{1}{1-\cot x} dx = Ax + B \log |\sin x - \cos x| + C$ है,तो $A + B = \dots$

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