यदि $\alpha$ और $\beta$ सभी $x \in [-1, 1]$ के लिए $f(x)=(\sin ^{-1} x)^2+(\cos ^{-1} x)^2$ के न्यूनतम और अधिकतम मान हैं,तो $8(\alpha+\beta)=$

  • A
    $\pi^2$
  • B
    $11 \pi^2$
  • C
    $9 \pi^2$
  • D
    $25 \pi^2$

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यदि $f(x) = \tan^{-1}\left\{ \frac{\log(e/x^2)}{\log(ex^2)} \right\} + \tan^{-1}\left( \frac{3 + 2\log x}{1 - 6\log x} \right)$ है,तो $\frac{d^n y}{dx^n}$ क्या होगा? $(n \ge 1)$

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