1
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is the simplest form of the expression $\boldsymbol{\operatorname { t a n }}^{-\mathbf{1}}\left(\frac{\sqrt{\mathbf{1 + x ^ { \mathbf { 2 } }}}-\mathbf{1}}{\boldsymbol{x}}\right)$ where $x \neq 0$

A

$2 \tan ^{-1} x$

B

$\tan ^{-1} \frac{x}{2}$

C

$\frac{1}{2} \tan ^{-1} x$

D

$\tan ^{-1} x$

2
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$ \mathop {\lim }\limits_{x \to 0} \frac{(1-\cos 2 x)(3+\cos x)}{x \tan 4 x} \text { is equal to: } $$

A

3

B

2

C

4

D

1

3
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A square plate is contracting at a uniform rate of $2 \mathrm{~cm}^2 / \mathrm{min}$. The rate at which the perimeter is decreasing when the side of the square is 16 cm is:

A

$\frac{1}{8} \mathrm{~cm} / \mathrm{min}$

B

$\frac{1}{4} \mathrm{~cm} / \mathrm{min}$

C

$16 \mathrm{~cm} / \mathrm{min}$

D

$32 \mathrm{~cm} / \mathrm{min}$

4
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $A=\{x: x$ is the first three odd numbers $\}$

$B=\{2 x+3: 0 \leq x<5, x \in \mathbb{N}\}$, then which of the following is true

A

$A \subset B$

B

$n(B)=5$

C

$A \cap B=\emptyset$

D

$A \cap B$ is a singleton set