यदि $\int e^x \left(f(x) - f^{\prime}(x)\right) dx = g(x) + C$ है,तो $\int e^x f^{\prime}(x) dx =$

  • A
    $\frac{1}{2} \left[e^x f(x) - g(x)\right] + C$
  • B
    $\frac{1}{2} \left[e^x f(x) + g(x)\right] + C$
  • C
    $\frac{e^x f^{\prime}(x) + g(x)}{2} + C$
  • D
    $\frac{1}{2} \left[e^x f(x) + e^x g(x)\right] + C$

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निम्नलिखित कथनों का अवलोकन करें:
$A: \int \left(\frac{x^2-1}{x^2}\right) e^{\frac{x^2+1}{x}} d x = e^{\frac{x^2+1}{x}} + c$
$R: \int f^{\prime}(x) e^{f(x)} d x = f(x) + c$
तो निम्नलिखित में से कौन सा सत्य है?

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$\int \frac{x + \sin x}{1 + \cos x} dx =$

$\int \frac{dx}{2 + \cos x} = $

$\int \frac{dx}{a^2 \sin^2 x + b^2 \cos^2 x}$ का मान क्या है?

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