1
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The value of $\frac{d}{d x}\left[\log \left(\sin \sqrt{\frac{x^2+1}{x^2+2}}\right)\right]$ when $x=\sqrt{2}$, is

A

$\frac{\sqrt{2} \cot \left(\frac{\sqrt{3}}{2}\right)}{6 \sqrt{3}}$

B

$\frac{\sqrt{2} \tan \left(\frac{\sqrt{3}}{2}\right)}{6 \sqrt{3}}$

C

$\frac{\sqrt{2} \cot \left(\frac{\sqrt{3}}{2}\right)}{8 \sqrt{3}}$

D

$\frac{\sqrt{2} \tan \left(\frac{\sqrt{3}}{2}\right)}{8 \sqrt{3}}$

2
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $f(x)=\frac{1+\sec x}{2(\sec x-1)}$ for $0

A

$\operatorname{cosec} x$

B

$-\operatorname{cosec} x$

C

$2 \operatorname{cosec} x$

D

$-2 \operatorname{cosec} x$

3
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The equation of the normal to the curve $\sin y=\sqrt{3} x \sin \left(\frac{\pi}{6}+y\right)$ at $x=0$, is

A

$2 x+\sqrt{3} y=0$

B

$2 x+y=0$

C

$x+2 y=0$

D

$\sqrt{3} x+2 y=0$

4
TS EAMCET 2022 (Online) 19th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Assertion (A) The curves $y^2=4 x$ and $x^2=-2 y$ intersect at $(1,2)$ orthogonally.

Reason (R) If the product of the slopes of the tangents drawn to two curves at their point of intersection is -1 , then the curves are said to cut each other orthogonally.

A

(A) is true, (R) is true and (R) is the correct explanation for (A).

B

(A) is true, (R) is true, but (R) is not the correct explanation for (A).

C

(A) is true but (R) is false.

D

(A) is false but (R) is true.

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