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(
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.
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.
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.
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飥?/p>
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6
6
6
0
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3
3
3
3
3
2
x
x
x
x
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0,
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x
<
6
,
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f
(
x
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x
锛?/p>
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x
2
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x
2
),
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x
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(
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3
锛?/p>
3)
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鈭?/p>
x
锛?/p>
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2
,
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2
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x
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x
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5
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x
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<
6
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x
)=
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x
2
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x
锛?/p>
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x
锛?
2
1
)
2
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4
13
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(
x
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B
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(
x
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=
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2
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(
x
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0
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+
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)
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m
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2
m
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0,
2
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m
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.
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.
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.
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.
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.
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f
(
x
)
鏄?/p>
R
涓婄殑濂囧嚱鏁帮紝涓斿湪锛?/p>
0
锛?/p>
+
鈭?/p>
)
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f
(
x
)
鏄?/p>
R
涓婄殑澧炲嚱鏁?/p>
.
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绛夊紡鍙瓑浠峰湴杞寲涓?/p>
f
(cos2
胃
锛?/p>
3)>
f
(2
m
cos
胃
锛?/p>
4
m
),
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cos2
胃
锛?/p>
3>2
m
cos
胃
锛?/p>
4
m
,
鍗?/p>
cos
2
胃
锛?/p>
m
cos
胃
+2
m
锛?/p>
2>0.
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t
=cos
胃
,
鍒欓棶棰樼瓑浠峰湴杞寲涓哄嚱鏁?/p>
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(
t
)
=
t
2
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mt
+2
m
锛?/p>
2=(
t
锛?
2
m
)
2
锛?/p>
4
2
m
+2
m
锛?/p>
2
鍦?/p>
锛?/p>
0
锛?