$\frac{x+\cos x}{\tan x}$ का अवकलज ज्ञात कीजिए।

  • A
    $\frac{(1-\sin x) \tan x-(x+\cos x) \sec ^{2} x}{\tan^{2} x}$
  • B
    $\frac{(1+\sin x) \tan x-(x+\cos x) \sec ^{2} x}{\tan^{2} x}$
  • C
    $\frac{(1-\sin x) \tan x+(x+\cos x) \sec ^{2} x}{\tan^{2} x}$
  • D
    $\frac{(1-\sin x) \sec x-(x+\cos x) \tan ^{2} x}{\tan^{2} x}$

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कुछ स्थिरांकों $a$ और $b$ के लिए,$(ax^2 + b)^2$ का अवकलज ज्ञात कीजिए।

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