यदि $y = \frac{1}{4}u^4$ और $u = \frac{2}{3}x^3 + 5$ है,तो $\frac{dy}{dx} = $

  • A
    $\frac{1}{27}x^2(2x^3 + 15)^3$
  • B
    $\frac{2}{27}x(2x^3 + 5)^3$
  • C
    $\frac{2}{27}x^2(2x^3 + 15)^3$
  • D
    इनमें से कोई नहीं

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यदि $y=\log \left\{\left(\frac{1+x}{1-x}\right)^{1 / 4}\right\}-\frac{1}{2} \tan ^{-1}(x)$ है,तो $\frac{d y}{d x}$ का मान ज्ञात कीजिए।

यदि $y = x \left[ \left( \cos \frac{x}{2} + \sin \frac{x}{2} \right) \left( \cos \frac{x}{2} - \sin \frac{x}{2} \right) + \sin x \right] + \frac{1}{2\sqrt{x}}$ है,तो $\frac{dy}{dx} = $

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

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