1
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
The quadratic equation 3x2 - (k2 + 5k)x + 3k2 - 5k = 0 has real roots of equal magnitude and opposite sign. Which one of the following is correct?
2
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
If p and q are the non-zero roots of the equation x2 + px + q = 0, then how many possible values can q have?
3
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Consider all the real roots of the equation x4 - 10x2 + 9 = 0. What is the sum of the absolute values of the roots?
4
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
If the roots of the equation 4x2 - (5k + 1)x + 5k = 0 differ by unity, then which one of the following is a possible value of k?
Questions Asked from Quadratic Equations and Inequalities (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
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Mathematics
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Sets, Relations and Functions Logarithms Quadratic Equations and Inequalities Sequence And Series Binomial Theorem Matrices Determinants Permutations and Combinations Probability Complex Numbers Vector Algebra Three Dimensional Geometry Statistics
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Trigonometric Angles and Equations Inverse Trigonometric Function Height and Distance Properties of Triangles
Coordinate Geometry
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