$\mathop {Limit}\limits_{x \to {x_1}} \,\,\frac{x}{{x - {x_1}}}\,\,\int\limits_{{x_1}}^x {f(t)} \, dt$ का मान ज्ञात कीजिए:

  • A
    $f(x_1)$
  • B
    $x_1 f(x_1)$
  • C
    $\frac{f(x_1)}{x_1}$
  • D
    अस्तित्व में नहीं है

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मान लीजिए $f(x) = \left| \begin{array}{ccc} \sec x & \cos x & \sec^2 x + \cot x \csc x \\ \cos^2 x & \cos^2 x & \csc^2 x \\ 1 & \cos^2 x & \cos^2 x \end{array} \right|$,तो $\int_0^{\pi /2} f(x) dx = $

$\int_0^2 x^{\frac{5}{2}} \sqrt{2-x} \, dx =$

द्वि-अवकलनीय फलन $f(x) = \int_{0}^{x} e^{x-t} f'(t) dt - (x^2 - x + 1) e^x, x \in R$ का न्यूनतम मान ज्ञात कीजिए।

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