1
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
What is $${d \over {dx}}\sqrt {1 - \sin 2x} $$ equal to, where $${\pi \over 4} < x < {\pi \over 2}$$ ?
A
cos x + sin x
B
$$-$$ (cos x + sin x)
C
$$\pm$$ (cos x + sin x)
D
None of the above
2
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If $$y = {e^{{x^2}}}\sin 2x$$, then what is $${{dy} \over {dx}}$$ at x = $$\pi$$ equal to ?
A
$${(1 + \pi )^{{e^{{\pi ^2}}}}}$$
B
$$2\pi {e^{{\pi ^2}}}$$
C
$$2{e^{{\pi ^2}}}$$
D
$${e^{{\pi ^2}}}$$
3
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
What is the derivative of $${2^{{{(\sin x)}^2}}}$$ with respect to sin x?
A
$$\sin x{2^{{{(\sin x)}^2}}}\ln 4$$
B
$$2\sin x{2^{{{(\sin x)}^2}}}\ln 4$$
C
$$\ln (\sin x){2^{{{(\sin x)}^2}}}$$
D
$$2\sin x\cos x{2^{{{(\sin x)}^2}}}$$
4
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Let $$f(x) = {x^2} + 2x - 5$$ and $$g(x) = 5x + 30$$. If $$h(x) = 5f(x) - xg(x)$$, then what is the derivative of h(x)?
A
$$-$$40
B
$$-$$20
C
$$-$$10
D
0
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