MCQ
यदि $y=\sec ^{-1}\left(\frac{1}{2 x^2-1}\right)$ तो $\frac{d y}{d x}=$
- A$\frac{-2}{1+x^2}$
- B$\frac{-2}{1-x^2}$
- ✓$\frac{-2}{\sqrt{1-x^2}}$
- Dइनमें से कोई नहीं
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.