$\int \frac{dx}{\tan x + \cot x + \sec x + \csc x} =$

  • A
    $\frac{1}{2} (\sin x - \cos x + x) + c$
  • B
    $\frac{1}{2} (\sin x - \cos x - x) + c$
  • C
    $\frac{1}{2} (\sin x - \cos x - \tan x + \cot x) + c$
  • D
    $\frac{1}{2} (\sin x + \cos x - \tan x - \cot x) + c$

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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:

આપેલ છે કે $\int_0^\infty \frac{x^2 \, dx}{(x^2 + a^2)(x^2 + b^2)(x^2 + c^2)} = \frac{\pi}{2(a + b)(b + c)(c + a)}$,તો $\int_0^\infty \frac{x^2 \, dx}{(x^2 + 4)(x^2 + 9)}$ ની કિંમત શોધો.

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જો $\int \frac{\cos 4x + 1}{\cot x - \tan x} dx = k \cos 4x + c$ હોય,તો $k$ ની કિંમત શોધો.

$\int \sqrt{x^{2}-8 x+7} \, dx$ ની કિંમત શોધો.

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