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Mathematics
Mathematics
Problem
∫
cos
2
x
+
2
sin
2
x
cos
2
x
d
x
=
\int \frac{\cos 2x + 2\sin^2 x}{\cos^2 x}\,dx =
∫
c
o
s
2
x
c
o
s
2
x
+
2
s
i
n
2
x
d
x
=
(a)
2
sec
x
+
c
2\sec x + c
2
sec
x
+
c
(b)
2
tan
x
+
c
2\tan x + c
2
tan
x
+
c
(c)
tan
x
+
c
\tan x + c
tan
x
+
c
(d) None of these (a)
2
sec
x
+
c
2\sec x + c
2
sec
x
+
c
(b)
2
tan
x
+
c
2\tan x + c
2
tan
x
+
c
(c)
tan
x
+
c
\tan x + c
tan
x
+
c
(d) None of these
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