જો $\int \frac{1+x^2}{1+x^4} dx=\frac{1}{\sqrt{2}} \tan ^{-1}\left[\frac{f(x)}{\sqrt{2}}\right]+c$ હોય,તો $f(x)=$

  • A
    $x+\frac{1}{x^2}$
  • B
    $x-\frac{1}{x^2}$
  • C
    $x+\frac{2}{x}$
  • D
    $x-\frac{1}{x}$

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$\int \sqrt{x^2-8 x+7} \, dx = $ . . . . . . $+ C$.

જો $I_1 = \int \frac{e^x}{e^{4x} + e^{2x} + 1} dx$ અને $I_2 = \int \frac{e^{-x}}{e^{-4x} + e^{-2x} + 1} dx$ હોય, તો $I_2 - I_1 =$

$\int \frac{1}{\left(1+x^2\right) \sqrt{x^2+2}} d x=$

જો $\int \frac{2 \, dx}{\sqrt{\cot^2 x - \tan^2 x}} = -\sqrt{f(x)} + c$ હોય, તો $f(x) =$

ધારો કે $I(x) = \int \frac{dx}{(x-11)^{\frac{11}{13}}(x+15)^{\frac{15}{13}}}$. જો $I(37) - I(24) = \frac{1}{4} \left( \frac{1}{b^{\frac{1}{13}}} - \frac{1}{c^{\frac{1}{13}}} \right)$,જ્યાં $b, c \in \mathbb{N}$,તો $3(b+c)$ ની કિંમત શોધો.

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