$\int \frac{\sin x+\sin ^3 x}{\cos 2 x} \,d x=A \cos x+B \log |f(x)|+c$ (जहाँ $c$ समाकलन का एक स्थिरांक है)। तो $A, B$ और $f(x)$ के मान हैं:

  • A
    $A=\frac{1}{2}, B=\frac{-3}{4 \sqrt{2}}, f(x)=\frac{\sqrt{2} \cos x-1}{\sqrt{2} \cos x+1}$
  • B
    $A=-\frac{1}{2}, B=\frac{-3}{4 \sqrt{2}}, f(x)=\frac{\sqrt{2} \cos x+1}{\sqrt{2} \cos x-1}$
  • C
    $A=\frac{1}{2}, B=\frac{-3}{4 \sqrt{2}}, f(x)=\frac{\sqrt{2} \cos x+1}{\sqrt{2} \cos x-1}$
  • D
    $A=\frac{3}{2}, B=\frac{1}{2}, f(x)=\frac{\sqrt{2} \cos x-1}{\sqrt{2} \cos x+1}$

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