ધારો કે $f(x)=7 \tan^8 x + 7 \tan^6 x - 3 \tan^4 x - 3 \tan^2 x$ માટે,$I_1 = \int_0^{\pi/4} f(x) \, dx$ અને $I_2 = \int_0^{\pi/4} x f(x) \, dx$ છે. તો $7 I_1 + 12 I_2$ ની કિંમત શોધો:

  • A
    $2 \pi$
  • B
    $\pi$
  • C
    $1$
  • D
    $2$

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જો $\int {\frac{{{x^4} + 1}}{{x{{\left( {{x^2} + 1} \right)}^2}}}} dx = A \ln |x| + \frac{B}{{1 + {x^2}}} + c$,જ્યાં $c$ એ સંકલનનો અચળાંક છે,તો:

$\begin{aligned} & \int \frac{x \, dx}{\sqrt[15]{\left(1+x^2\right)^{12}\left(2+x^2\right)^{18}}}=\alpha\left(\frac{1+x^2}{2+x^2}\right)^{1 / n}+C \Rightarrow \\ & \frac{n}{\alpha}= \end{aligned}$

$\begin{aligned} & \text{જો } 5(f(x))^2 = x f(x) + 30 \text{ અને } \\ & \int \frac{3 x^3 + (1 - 30 x^2) f(x)}{(10 f(x) - x)(x^3 - f(x))^2} dx \\ & = \frac{A}{B x^3 + D f(x)} + C, \text{ તો } A + B + D = \end{aligned}$

જો $f(x) = \int \frac{x^2 + \sin^2 x}{1 + x^2} \cdot \sec^2 x \, dx$ અને $f(0) = 0$ હોય,તો $f(1) = $

ધારો કે $I_{n}(x)=\int_{0}^{x} \frac{1}{(t^{2}+5)^{n}} dt, n=1, 2, 3, \ldots$. તો

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