MCQ
Differentiate $\sin ^2 x$ w.r.t. $\cos ^2 x$ ________ .
- A$\tan ^2 x$
- B$-\tan ^2 x$
- ✓$-1$
- D1
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$\cos \left(\frac{1}{2} \cos ^{-1}\left(e^{-x}\right)\right) d x=\sqrt{e^{2 x}-1} \,d y$
If it intersects $y$-axis at $y=-1$, and the intersection point of the curve with $x$-axis is $(\alpha, 0)$ the $\mathrm{e}^{\alpha}$ is equal to $.....$