JEE MAIN - Mathematics Hindi (2018 - 16th April Morning Slot - No. 5)
यदि $$x=\sqrt{2^{\operatorname{cosec}^{-1} t}}$$ तथा $$y=\sqrt{2^{\sec ^{-1} t}}, \left(|t| \geqslant 1\right.$$ है ) तो $$\frac{\mathrm{d} y}{\mathrm{~d} x}$$ बराबर है :
$$\frac{y}{x}$$
$$\frac{x}{y}$$
$$-\frac{y}{x}$$
$$-\frac{x}{y}$$
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