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1
锛嶽2016路闀挎槬鐩戞祴
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宸茬煡鍑芥暟
f
(
x
)
锛?/p>
2sin
x
cos
x
锛?/p>
2
3cos
2
x
锛?/p>
3.
(1)
姹傚嚱鏁?/p>
y
锛?/p>
f
(
x
)
鐨勬渶灏忔鍛ㄦ湡鍜屽崟璋冮�掑噺鍖洪棿锛?/p>
(2)
宸茬煡鈻?/p>
ABC
鐨勪笁涓唴瑙?/p>
A
锛?/p>
B
锛?/p>
C
鐨勫杈瑰垎鍒负
a
锛?/p>
b
锛?/p>
c
锛?/p>
鍏朵腑
a
锛?/p>
7
锛?/p>
鑻ラ攼瑙?/p>
A
婊¤冻
f
飪?/p>
飪?/p>
飪?/p>
飪?
飪?/p>
飪?/p>
A
2
锛?/p>
蟺
6
锛?/p>
3
锛屼笖
sin
B
锛?/p>
sin
C
锛?/p>
13
3
14
锛屾眰鈻?/p>
ABC
鐨勯潰绉紟
瑙?/p>
(1)
f
(
x
)
锛?/p>
2sin
x
cos
x
锛?/p>
2
3cos
2
x
锛?/p>
3
锛?/p>
sin2
x
锛?/p>
3cos2
x
锛?/p>
2sin
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
2
x
锛?/p>
蟺
3
锛?/p>
鍥犳
f
(
x
)
鐨勬渶灏忔鍛ㄦ湡涓?/p>
T
锛?/p>
2
蟺
2
锛?/p>
蟺
.
f
(
x
)
鐨勫崟璋冮�掑噺鍖洪棿涓?/p>
2
k
蟺
锛?/p>
蟺
2
鈮?
x
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蟺
3
鈮?
k
蟺
锛?
3
蟺
2
(
k
鈭?/p>
Z
)
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鍗?/p>
x
鈭?/p>
飪?
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
k
蟺
锛?/p>
蟺
12
锛?/p>
k
蟺
锛?/p>
7
蟺
12
(
k
鈭?/p>
Z
)
锛?/p>
(2)
鐢?/p>
f
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
A
2
锛?/p>
蟺
6
锛?/p>
2sin
飪?/p>
飪?/p>
飪?/p>
飪?
飪?/p>
飪?/p>
2
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
A
2
锛?/p>
蟺
6
锛?/p>
蟺
3
锛?/p>
2sin
A
锛?/p>
3
锛屽張
A
涓洪攼瑙掞紝鎵�浠?/p>
A
锛?/p>
蟺
3
.
鐢辨寮﹀畾鐞嗗彲寰?/p>
2
R
锛?/p>
a
sin
A
锛?/p>
7
3
2
锛?/p>
14
3
锛?/p>
sin
B
锛?/p>
sin
C
锛?
b
锛?/p>
c
2
R
锛?/p>
13
3
14
锛?/p>
鍒?/p>
b
锛?/p>
c
锛?/p>
13
3
14
脳
14
3
锛?/p>
13
锛?/p>
鐢变綑寮﹀畾鐞嗗彲鐭ワ紝
cos
A
锛?/p>
b
2
锛?/p>
c
2
锛?/p>
a
2
2
bc
锛?
b
锛?/p>
c
2
锛?/p>
2
bc
锛?/p>
a
2
2
bc
锛?/p>
1
2
锛?/p>
鍙眰寰?/p>
bc
锛?/p>
40
锛?/p>
鏁?/p>
S
鈻?/p>
ABC
锛?/p>
1
2
bc
sin
A
锛?/p>
10
3.
2
锛?/p>
[2016路寮�灏佷竴妯?/p>
]
濡傚浘
1
锛?/p>
鍦ㄧ洿瑙掓褰?/p>
ABCD
涓紝
鈭?/p>
ADC
锛?0掳锛?/p>
CD
鈭?/p>
AB
锛?/p>
AD
锛?/p>
CD
锛?/p>
1
2
AB
锛?/p>
2
锛屽皢鈻?/p>
ADC
娌?/p>
AC
鎶樿捣锛屼娇骞抽潰
ADC
鈯ュ钩闈?/p>
ABC
锛屽緱鍒板嚑浣曚綋
D
锛?/p>
ABC
锛屽鍥?/p>
2
鎵�绀猴紟