1
AP EAPCET 2025 - 26th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $\sin x \sqrt{\cos y}-\cos y \sqrt{\sin x}=0$, then $\frac{d y}{d x}=$

A

$\tan x$

B

1

C

-1

D

$-\cot x$

2
AP EAPCET 2025 - 26th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $y=\left(\log _x \sin x\right)^x$, then $\frac{d y}{d x}=$

A

$y\left[\frac{x \sin x}{\log \cos x}+\log (\log \sin x)+\frac{1}{\log x}-\log (\log x)\right]$

B

$y\left[\frac{x \cos x}{\log \sin x}-\log (\log \sin x)+\frac{1}{\log x}+\log (\log x)\right]$

C

$y\left[\frac{x \cot x}{\log \sin x}+\log (\log \sin x)-\frac{1}{\log x}-\log (\log x)\right]$

D

$y\left[\frac{x \cot x}{\log \sin x}-\log (\log \sin x)+\frac{1}{\log x}-(\log x)\right]$

3
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $x=\sqrt{2^{\operatorname{cosec}^{-1} t}}$ and $y=\sqrt{2^{\sec ^{-1} t}},|t| \geq 1$, then $\frac{d y}{d x}=$

A

$\frac{x}{y}$

B

$\frac{y}{x}$

C

$-\frac{y}{x}$

D

$-\frac{x}{y}$

4
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $(a+\sqrt{2} b \cos x)(a-\sqrt{2} b \cos y) =a^2-b^2$, where $a>b>0$, then at $\left(\frac{\pi}{4}, \frac{\pi}{4}\right), \frac{d y}{d x}=$

A

$\frac{a+b}{a-b}$

B

$\frac{a-b}{a+b}$

C

$\frac{a-2 b}{a+2 b}$

D

$\frac{2 a+b}{2 a-b}$

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