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Mathematics
Mathematics
Problem
∫
cos
2
x
−
cos
2
α
cos
x
−
cos
α
d
x
\int \frac{\cos 2x - \cos 2\alpha}{\cos x - \cos \alpha} dx
∫
c
o
s
x
−
c
o
s
α
c
o
s
2
x
−
c
o
s
2
α
d
x
is equal to
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