यदि $f(x) = \int_{x^2}^{x^4} \sin \sqrt{t} \, dt$ है,तो $f'(x)$ का मान क्या होगा?

  • A
    $\sin(x^2) - \sin(x)$
  • B
    $4x^3 \sin(x^2) - 2x \sin(x)$
  • C
    $x^4 \sin(x^2) - x \sin(x)$
  • D
    इनमें से कोई नहीं

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मान लीजिए $f, g:(0, \infty) \rightarrow \mathbb{R}$ दो फलन हैं जो $f(x)=\int_{-x}^x(|t|-t^2) e^{-t^2} dt$ और $g(x)=\int_0^{x^2} t^{1/2} e^{-t} dt$ द्वारा परिभाषित हैं। तो $(f(\sqrt{\log_{e} 9}) + g(\sqrt{\log_{e} 9}))$ का मान ज्ञात कीजिए।

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$\mathop {\lim }\limits_{x \to 0} \frac{{\int_0^x {\cos {t^2}dt} }}{x}$ का मान है

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