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Mathematics
Mathematics
Problem
If
y
=
tan
−
1
(
2
x
1
+
2
2
x
+
1
)
y = \tan^{-1}\left(\frac{2^x}{1+2^{2x+1}}\right)
y
=
tan
−
1
(
1
+
2
2
x
+
1
2
x
)
, then
d
y
d
x
\frac{dy}{dx}
d
x
d
y
at
x
=
0
x = 0
x
=
0
is (a) 1 (b) 2 (c)
ln
2
\ln 2
ln
2
(d) none of these
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