1
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$ \mathop {\lim }\limits_{y \to 0} \frac{\sqrt{1+\sqrt{1+y^4}}-\sqrt{2}}{y^4}= $$

A

$\frac{1}{4 \sqrt{2}}$

B

$\frac{1}{2 \sqrt{2}(1+\sqrt{2})}$

C

$\frac{1}{2 \sqrt{2}}$

D

$\frac{1}{4 \sqrt{2}(1+\sqrt{2})}$

2
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $\mathop {\lim }\limits_{x \to 0} \frac{\cos 2 x-\cos 4 x}{1-\cos 2 x}=k$, then $\lim\limits_{x \rightarrow k} \frac{x^k-27}{x^{k+1}-81}=$

A

0

B

1

C

$\frac{1}{2}$

D

$\frac{1}{4}$

3
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the function $f(x)=\left\{\begin{array}{l}1+\cos x, x \leq 0 \\ a-x, 02\end{array}\right.$ everywhere, then $a^2+b^2=$

A

4

B

8

C

6

D

12

4
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $x=2 \cos ^3 \theta$ and $y=3 \sin ^2 \theta$, then $\frac{d y}{d x}=$

A

$-\sec \theta$

B

$\cos \theta$

C

$-\operatorname{cosec} \theta$

D

$\sin \theta$