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

Consider the following statements:

Statement-I: The function  $f(x)=\frac{x^{3}+128}{x}$ has a minimum value 48 at x = 4

Statement-II: As x increases through 4, f'(x) changes sign from positive to negative.

Which one of the following is correct in respect of the above statements?

1
Both Statement-I and Statement-II are correct and Statement-II explains Statement-I
2
 Both Statement-I and Statement-II are correct but Statement-II does not explain Statement-I
3
 Statement-I is correct but Statement-II is not correct
4
Statement-I is not correct but Statement-II is correct
2
NDA Mathematics 13 April 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
Consider the following for the two (02) items that follow: Let ABC be a triangle right-angled at B and AB+AC = 3 units.
What is A equal to if the area of the triangle is maximum?
A
π/6
B
π/4
C
π/3
D
5π/12
3
NDA Mathematics 13 April 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
Consider the following for the two (02) items that follow: Let ABC be a triangle right-angled at B and AB+AC = 3 units.
What is the maximum area of the triangle?
A
$\sqrt{3}/2$
B
$\sqrt{3} $
C
$\sqrt{6}/2$
D
$\sqrt{6}$
4
NDA Mathematics 13 April 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
Consider the following for the two (02) items that follow:
The slope of the tangent to the curve y = f(x) at (x, f(x) ) is 4 for every real number x and the curve passes through the origin.
What is the nature of the curve?
A
A straight line passing through (1,4)
B
A straight line passing through (-14)
C
A parabola with vertex at origin and focus at (2,0)
D
A parabola with vertex at origin and focus at (1, 0)