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Mathematics
Mathematics
Problem
The value of
∫
cos
5
x
+
cos
4
x
1
−
2
cos
3
x
d
x
\int \frac{\cos 5x + \cos 4x}{1 - 2 \cos 3x} dx
∫
1
−
2
c
o
s
3
x
c
o
s
5
x
+
c
o
s
4
x
d
x
, is a.
sin
x
+
sin
2
x
+
C
\sin x + \sin 2x + C
sin
x
+
sin
2
x
+
C
b.
sin
x
−
sin
2
x
2
+
C
\sin x - \frac{\sin 2x}{2} + C
sin
x
−
2
s
i
n
2
x
+
C
c.
−
sin
x
−
sin
2
x
2
+
C
-\sin x - \frac{\sin 2x}{2} + C
−
sin
x
−
2
s
i
n
2
x
+
C
d. None of these
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