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Mathematics
Problem
Find the integrals of the functions in Exercises 1 to 22: 20.
cos
2
x
(
cos
x
+
sin
x
)
2
\frac{\cos 2 x}{(\cos x+\sin x)^{2}}
(
c
o
s
x
+
s
i
n
x
)
2
c
o
s
2
x
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