1
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Let $$f(x) = {(\left| x \right| - \left| {x - 1} \right|)^2}$$
What is f'(x) equal to when 0 < x < 1 ?
A
0
B
2x $$-$$ 1
C
4x $$-$$ 2
D
8x $$-$$ 4
2
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Let $$f(x) = {(\left| x \right| - \left| {x - 1} \right|)^2}$$
Which of the following equations is/are correct?

I. f($$-$$2) = f(5)

II. f''($$-$$2) + f''(0.5) + f''(3) = 4

Select the correct answer using the code given below.
A
Only I
B
Only II
C
Both I and II
D
Neither I nor II
3
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the function

$$f(x) = \left| {\matrix{ {{x^3}} & {\sin x} & {\cos x} \cr 6 & { - 1} & 0 \cr p & {{p^2}} & {{p^3}} \cr } } \right|$$,

where p is a contant.
What is the value of f'(0) ?
A
p3
B
3p3
C
6p3
D
$$-$$6p3
4
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the function

$$f(x) = \left| {\matrix{ {{x^3}} & {\sin x} & {\cos x} \cr 6 & { - 1} & 0 \cr p & {{p^2}} & {{p^3}} \cr } } \right|$$,

where p is a contant.
What is the value of p for which f''(0) = 0 ?
A
$$ - {1 \over 6}$$ or 0
B
$$-$$1 or 0
C
$$ - {1 \over 6}$$ or 1
D
$$-$$1 or 1
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