1
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Let $$f(a) = {{a - 1} \over {a + 1}}$$ consider the following :
1. $$f(2a) = f(a) + 1$$
2. $$f\left( {{1 \over a}} \right) = - f(a)$$
Which of the above is/are correct?
1. $$f(2a) = f(a) + 1$$
2. $$f\left( {{1 \over a}} \right) = - f(a)$$
Which of the above is/are correct?
2
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Let $$f(x):\left\{ {\matrix{
{x,} & {x\,is\,rational} \cr
{0,} & {x\,is\,irrational} \cr
} } \right.$$
and $$g(x):\left\{ {\matrix{ {x,} & {x\,is\,rational} \cr {0,} & {x\,is\,irrational} \cr } } \right.$$
if $$f:R \to R$$ and $$g:R \to R$$, then (f $$-$$ g) is
and $$g(x):\left\{ {\matrix{ {x,} & {x\,is\,rational} \cr {0,} & {x\,is\,irrational} \cr } } \right.$$
if $$f:R \to R$$ and $$g:R \to R$$, then (f $$-$$ g) is
3
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If $$f(x) = {{\sqrt {x - 1} } \over {x - 4}}$$, defines a function on R, then what is its domain?
4
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
When one of the following is correct in respect of the function f : R $$\to$$ R+ defined as f(x) = |x + 1| ?
Questions Asked from Functions (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