यदि $f(x) = \int_{-1}^{x} |t| dt$ है,तो किसी भी $x \geq 0$ के लिए,$f(x)$ का मान क्या होगा?

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

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$\int_0^a {\frac{{{x^4}\,dx}}{{{{({a^2} + {x^2})}^4}}}} = $

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$\int_0^{\pi /2} {\frac{{\sin x\cos x\,dx}}{{{{\cos }^2}x + 3\cos x + 2}}} = $

$x \in [0, 1]$ के लिए $\int_0^x \frac{t^2}{1+t^4} dt = 2x - 1$ को संतुष्ट करने वाले भिन्न $x$ की कुल संख्या क्या है?

यदि $y = \sqrt{\sec x + \sqrt{\sec x + \sqrt{\sec x + \dots \infty}}} \,,$ है,तो $\int_{0}^{\pi/3} (2y - 1) \frac{dy}{dx} \, dx$ का मान $(\sec x > 0)$ के लिए ज्ञात कीजिए -

$\int_{1/4}^{1/2} \frac{dx}{\sqrt{x - x^2}} = $

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