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Mathematics
Problem
Differential coefficient of
tan
−
1
1
−
x
2
1
+
x
2
\tan^{-1} \sqrt{\frac{1-x^2}{1+x^2}}
tan
−
1
1
+
x
2
1
−
x
2
w.r.t
cos
−
1
(
x
2
)
\cos^{-1}(x^2)
cos
−
1
(
x
2
)
is (a)
1
2
\frac{1}{2}
2
1
(b)
−
1
2
-\frac{1}{2}
−
2
1
(c) 1 (d) 0
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