1
NDA Mathematics 14th September 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language

Consider the following statements:

I. $y=xe^{2x}$ is the solution of $\frac{dy}{dx}=y(2+\frac{1}{x})$

II. $y=x\ln |x|+cx$ is the solution of $\frac{dy}{dx}=\frac{x+y}{x}$

Which of the statements given above is/are correct?

1
 I only
2
II only
3
Both I and II
4
Neither I nor II
2
NDA Mathematics 14th September 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
If k is an arbitrary constant, then what is the general solution of the equation $(x+y)^{2}\frac{dy}{dx}=k^{2}$
1
 y + x = tan(x + c) + k
2
$x+y=k\tan \left(\frac{y-c}{k}\right) $
3
$x-y=k\tan \left(\frac{y-c}{k}\right) $
4
 y - x = tan(x + c) + k
3
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language

Direction : Consider the following for the items that follow :

Let ydx + (x - y3)dy = 0 be a differential equation.  

What are the order and degree respectively of the differential equation? 
1
1 and 1
2
1 and 2
3
2 and 1
4
1 and 3
4
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language

Direction : Consider the following for the items that follow :

Let ydx + (x - y3)dy = 0 be a differential equation.  

What is the solution of the differential equation? 
1
y4 + 2x = c
2
y4 + 3x = c
3
2xy4 + x = c
4
4xy - y4 = c