अवकल समीकरण $\frac{dy}{dx} = e^x + \cos x + x + \tan x$ का हल है

  • A
    $y = e^x + \sin x + \frac{x^2}{2} + \log \cos x + c$
  • B
    $y = e^x + \sin x + \frac{x^2}{2} + \log \sec x + c$
  • C
    $y = e^x - \sin x + \frac{x^2}{2} + \log \cos x + c$
  • D
    $y = e^x - \sin x + \frac{x^2}{2} + \log \sec x + c$

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Difficult
View Solution

यदि $\int f'(x) \cdot e^{x^2} dx = (x - 1) \cdot e^{x^2} + k$ है, जहाँ $k$ समाकलन स्थिरांक है, तो $f(x) = \dots$

$\int \frac{dx}{\cos 2x - \cos^2 x} = $

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