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Mathematics
Mathematics
Problem
Evaluate
∫
x
2
(
x
sec
2
x
+
tan
x
)
(
x
tan
x
+
1
)
2
d
x
\int \frac{x^2 (x \sec^2 x + \tan x)}{(x \tan x + 1)^2} dx
∫
(
x
t
a
n
x
+
1
)
2
x
2
(
x
s
e
c
2
x
+
t
a
n
x
)
d
x
.
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