1
KCET 2017
MCQ (Single Correct Answer)
+1
-0
If $y=\tan ^{-1}\left(\frac{\sin x+\cos x}{\cos x-\sin x}\right)$, then $\frac{d y}{d x}$ is equal to
A
$1 / 2$
B
0
C
$\pi / 4$
D
1
2
KCET 2017
MCQ (Single Correct Answer)
+1
-0
The derivative of $\cos ^{-1}\left(2 x^2-1\right)$ w.r.t. $\cos ^{-1} x$ is
A
$1-x^2$
B
$\frac{2}{x}$
C
$\frac{-1}{2 \sqrt{1-x^2}}$
D
2
KCET Subjects
EXAM MAP