જો $I=\int \frac{e^x}{e^{4 x}+e^{2 x}+1} \,d x$ અને $J=\int \frac{e^{-x}}{e^{-4 x}+e^{-2 x}+1} \,d x$ હોય, તો કોઈપણ સ્વૈચ્છિક અચળાંક $c$ માટે, $J-I$ નું મૂલ્ય શું થાય?

  • A
    $\frac{1}{2} \log \left|\left(\frac{e^{4 x}-e^{2 x}+1}{e^{4 x}+e^{2 x}+1}\right)\right|+c$
  • B
    $\frac{1}{2} \log \left|\left(\frac{e^{2 x}+e^x+1}{e^{2 x}-e^x+1}\right)\right|+c$
  • C
    $\frac{1}{2} \log \left|\left(\frac{e^{2 x}-e^x+1}{e^{2 x}+e^x+1}\right)\right|+c$
  • D
    $\frac{1}{2} \log \left|\left(\frac{e^{4 x}+e^{2 x}+1}{e^{4 x}-e^{2 x}+1}\right)\right|+c$

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જો $I = \int \frac{dx}{\sin(x-a) \sin(x-b)}$ હોય,તો $I$ નું મૂલ્ય શું થાય?

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