1
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Find the solution of equation $$\frac{d y}{d x}=\frac{1}{\cos (x+y)}$$

A
$$\cot \left(\frac{x+y}{2}\right)+c$$
B
$$\sec \left(\frac{x+y}{2}\right)+c$$
C
$$\tan \left(\frac{x+y}{2}\right)+c$$
D
$$-\cot \left(\frac{x-y}{2}\right)+c$$
2
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Find the solution of $$\frac{d y}{d x}=\frac{1}{\cos (x-y)}$$

A
$$-\cot \left(\frac{x+y}{2}\right)+c$$
B
$$\operatorname{cosec}^2\left(\frac{x+y}{2}\right)+c$$
C
$$\tan \left(\frac{x+y}{2}\right)+c$$
D
$$\cot \left(\frac{x-y}{2}\right)+c$$
3
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

An urn contains 5 red marbles, 4 black marbles and 3 white marbles. Then the number of ways in which 4 marbles can be drawn so that at the most three of them are red is

A
590
B
490
C
430
D
510
4
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

The value of $$\lim _\limits{x \rightarrow \infty}\left[\frac{p^{1 / x}+q^{1 / x}+r^{1 / x}+s^{1 / x}}{4}\right]^{3 x}, p, q, r, s>0 \text {, }$$ is

A
$$(\text {pqrs})^3$$
B
$$(p q r s)^{3 / 2}$$
C
$$(\text {pqrs})^{3 / 4}$$
D
None of these
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