1
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If the roots of the equation $$a(b - c){x^2} + b(c - a)x + c(a - b) = 0$$ are equal, then which one of the following is correct?
2
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If $$\left| {{x^2} - 3x + 2} \right| > {x^2} - 3x + 2$$, then which one of the following is correct?
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What re the roots of the equation $$\left| {{x^2} - x - 6} \right| = x + 2$$?
4
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The equation px2 + qx + r = 0 (where p, q, r all are positive) has distinct real roots a and b. Which one of the following is correct?
Questions Asked from Quadratic Equations and Inequalities (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
NDA Subjects
Mathematics
Algebra
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
Trigonometry
Trigonometric Angles and Equations Inverse Trigonometric Function Height and Distance Properties of Triangles
Coordinate Geometry
Calculus
English
General Studies