$\frac{d}{dx}[e^{ax} \cos(bx + c)] = ?$

  • A
    $e^{ax}[a \cos(bx + c) - b \sin(bx + c)]$
  • B
    $e^{ax}[a \sin(bx + c) - b \cos(bx + c)]$
  • C
    $e^{ax}[\cos(bx + c) - \sin(bx + c)]$
  • D
    इनमें से कोई नहीं

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$\sec^{-1} x$ का अवकल गुणांक (differential coefficient) क्या है?

यदि $y = \sin (\sqrt {\sin x + \cos x} )$,तो $\frac{dy}{dx} = $

यदि $f(x) = 4x^3 + 3x^2 + 3x + 4$,$x \neq 0$ है,तो $\frac{d}{dx}\left(x^3 \cdot f\left(\frac{1}{x}\right)\right) =$ . . . . . .

$x$ के सापेक्ष निम्नलिखित का अवकलन कीजिए: $e^{-x}$

यदि $f(2) = 4$ और $f'(2) = 1$ है,तो $\mathop {\lim }\limits_{x \to 2} \frac{xf(2) - 2f(x)}{x - 2} = $

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