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Mathematics
Mathematics
Problem
d
d
x
tan
−
1
(
sec
x
+
tan
x
)
=
\frac{d}{dx} \tan^{-1}(\sec x + \tan x) =
d
x
d
tan
−
1
(
sec
x
+
tan
x
)
=
(a) 1 (b)
1
/
2
1/2
1/2
(c)
cos
x
\cos x
cos
x
(d)
sec
x
\sec x
sec
x
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