1
NDA Mathematics 4 September 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If $\frac{d}{d x}\left(\frac{1+x^4+x^8}{1−x^2+x^4}\right)$ = ax + bx3, then which one of the following is correct?
A
a = b
B
a = 2b
C
a + b = 0
D
2a = b
2
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If xyyx = 1, then what is $\frac{dy}{dx}$ at (1, 1) equal to?
A
-1
B
0
C
1
D
4
3
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If y = (xx)x, then what is the value of $\frac{dy}{dx}$ at x = 1?
A
$\frac{1}{2}$
B
1
C
2
D
4
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