यदि शून्येतर $x$ के लिए,$af(x) + bf\left( {\frac{1}{x}} \right) = \frac{1}{x} - 5,$ जहाँ $a \ne b,$ है,तो $\int_1^2 {f(x)\,dx = } $

  • A
    $\frac{1}{{({a^2} + {b^2})}}\left[ {a\log 2 - 5a + \frac{7}{2}b} \right]$
  • B
    $\frac{1}{{({a^2} - {b^2})}}\left[ {a\log 2 - 5a + \frac{7}{2}b} \right]$
  • C
    $\frac{1}{{({a^2} - {b^2})}}\left[ {a\log 2 - 5a - \frac{7}{2}b} \right]$
  • D
    $\frac{1}{{({a^2} + {b^2})}}\left[ {a\log 2 - 5a - \frac{7}{2}b} \right]$

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Similar Questions

किसी भी पूर्णांक $n$ के लिए, समाकलन $\int_0^\pi e^{\cos^2 x} \cos^3(2n+1)x \, dx$ का मान ज्ञात कीजिए।

$\int_0^{\frac{\pi}{4}} \frac{\cos ^2 x}{\cos ^2 x+4 \sin ^2 x} d x=$

$\int_0^{\frac{\pi}{2}} \frac{\cos ^3 x}{\sin x+\cos x} d x=$

यदि $I_n = \int_{-\pi}^{\pi} \frac{\sin(nx)}{(1+\pi^x) \sin x} dx$,$n=0, 1, 2, \ldots$,तो
$(A)$ $I_n = I_{n+2}$
$(B)$ $\sum_{m=1}^{10} I_{2m+1} = 10\pi$
$(C)$ $\sum_{m=1}^{10} I_{2m} = 0$
$(D)$ $I_n = I_{n+1}$

$\int\limits_{ - 1}^1 {\frac{{{x^3} + |x| + 1}}{{{x^2} + 2|x| + 1}}} dx = a \ln 2 + b$,तो:

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