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Mathematics
Mathematics
Problem
The sum of the maximum and minimum values of the function
f
(
x
)
=
1
1
+
(
2
cos
x
−
4
sin
x
)
2
f(x) = \frac{1}{1 + (2 \cos x - 4 \sin x)^2}
f
(
x
)
=
1
+
(
2
c
o
s
x
−
4
s
i
n
x
)
2
1
is a.
22
21
\frac{22}{21}
21
22
b.
21
20
\frac{21}{20}
20
21
c.
22
20
\frac{22}{20}
20
22
d.
21
11
\frac{21}{11}
11
21
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