$\int_{-\pi / 15}^{\pi / 15} \frac{\cos 5 x}{1+e^{5 x}} d x=$

  • A
    $\frac{1}{5}$
  • B
    $\frac{\sqrt{3}}{10}$
  • C
    $\frac{1}{15}$
  • D
    $\frac{1}{10}$

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વિધેય $F(x) = \int_0^x \log \left( \frac{1 - t}{1 + t} \right) \,dt$ એ

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નિશ્ચિત સંકલનના ગુણધર્મોનો ઉપયોગ કરીને,$\int_{0}^{\frac{\pi}{2}} \frac{\cos ^{5} x}{\sin ^{5} x+\cos ^{5} x} d x$ નું મૂલ્ય શોધો.

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નિશ્ચિત સંકલનના ગુણધર્મોનો ઉપયોગ કરીને,$\int_{0}^{\frac{\pi}{2}} \cos ^{2} x d x$ નું મૂલ્ય શોધો.

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જો $f(a+b-x)=f(x)$ હોય,તો $\int_a^b x f(x) d x=$ . . . . . . .

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