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Extreme values and Periodicity of Trigonometric functions
Question
If
f
(
x
)
=
sin
2
π
8
+
x
2
−
sin
2
π
8
−
x
2
, then the period of f is
Moderate
A
π
B
π
2
C
π
3
D
2
π
Solution
sin
(
A
+
B
)
sin
(
A
−
B
)
=
sin
2
A
−
sin
2
B
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