1
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Read the following information carefully and answer the questions given below.

2x2 + 3x $$-$$ $$\alpha$$ = 0 has roots $$-$$2 and $$\beta$$ while the equation x2 $$-$$ 3mx + 2m2 = 0 has both roots positive, where $$\alpha$$ > 0 and $$\beta$$ > 0.
What is the value of $$\alpha$$?
A
$${1 \over 2}$$
B
1
C
2
D
4
2
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Read the following information carefully and answer the questions given below.

2x2 + 3x $$-$$ $$\alpha$$ = 0 has roots $$-$$2 and $$\beta$$ while the equation x2 $$-$$ 3mx + 2m2 = 0 has both roots positive, where $$\alpha$$ > 0 and $$\beta$$ > 0.
If $$\beta$$, 2, 2 m are in GP, then what is the value of $$\beta$$$$\sqrt m $$?
A
1
B
2
C
4
D
6
3
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If c > 0 and 4a + c < 2b, then ax2 $$-$$ bx + c = 0 has a root in which one of the following intervals?
A
(0, 2)
B
(2, 3)
C
(3, 4)
D
($$-$$2, 0)
4
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Read the following information carefully and answer the questions given below.

Let $$\alpha$$ and $$\beta$$ ($$\alpha$$ < $$\beta$$) be the roots of the equation x2 + bx + c = 0, where b > 0 and c < 0.
Consider the following

1. $$\beta$$ < $$-$$ $$\alpha$$

2. $$\beta$$ < | $$\alpha$$ |

Which of the above is/are correct?
A
Only 1
B
Only 2
C
Both 1 and 2
D
Neither 1 nor 2
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