--
---
2018
楂樿�冪湡棰樺垎绫绘眹缂栵細涓夎鍑芥暟
涓�銆侀�夋嫨棰?/p>
1.
銆?/p>
2018
楂樿�冪湡棰橀噸搴嗙悊
5
銆戣
tan ,
tan
鏄柟绋?/p>
x
2
3x 2
0
鐨勪袱涓牴锛屽垯
tan(
)
鐨勫�?/p>
涓?/p>
锛?/p>
A
锛?/p>
-
3
锛?/p>
B
锛?/p>
-
1
锛?/p>
C
锛?/p>
1
锛?/p>
D
锛?/p>
3
銆愮瓟妗堛�?/p>
A
銆愯В鏋愩�戝洜涓?/p>
tan , tan
鏄柟绋?/p>
x
2
3x 2 0
鐨勪袱涓牴锛屾墍浠?/p>
tantan
3
锛?/p>
tan tan
2
锛屾墍浠?/p>
tan(
tan
tan
3
3
锛岄�?/p>
A.
)
tan
1 2
1 tan
2.
銆?/p>
2018
楂樿�冪湡棰樻禉姹熺悊
4
銆戞妸鍑芥暟
y=cos2x+1
鐨勫浘璞′笂鎵�鏈夌偣鐨勬í鍧愭爣浼搁暱鍒?/p>
鍘熸潵鐨?/p>
2
鍊嶏紙绾靛潗鏍囦笉鍙橈級
锛?
鐒?/p>
鍚庡悜宸﹀钩
绉?/p>
1
涓崟浣嶉暱搴︼紝鍐嶅悜涓嬪钩绉?/p>
1
涓崟浣嶉暱搴︼紝寰楀埌鐨勫浘鍍忔槸
銆愮瓟妗堛�?/p>
A
銆愯В鏋愩�戞牴鎹璁炬潯浠跺緱鍒板彉鍖栧悗鐨勫嚱鏁?
涓?/p>
y
cos(x
1)
锛岀粨鍚堝嚱鏁板浘璞″彲鐭ラ�?
椤?/p>
A
绗﹀悎瑕佹眰銆傛晠閫?/p>
A.
3.
銆?/p>
2018
楂樿�冪湡棰樻柊璇炬爣鐞?/p>
9
銆戝凡鐭?/p>
0
锛屽嚱鏁?/p>
f
( x)
sin
(
x
)
鍦?/p>
(
, )
涓婂崟璋冮�掑噺
.
鍒?/p>
鐨勫彇鍊艰寖鍥存槸
4
2
锛?/p>
锛?/p>
( A) [
1
,
5
]
( B)
[
1
,
3
]
(C )
(0,
1
]
(D ) (0, 2]
2
4
2
4
2
銆愮瓟妗堛�?/p>
A
銆愯В鏋愩�戝嚱鏁?/p>
f
( x)
sin(
x
)
鐨勫鏁颁负
f '( x)cos( x
)
锛岃浣垮嚱鏁?/p>
f ( x)
sin(
x
)
鍦?/p>
( , )
涓?/p>
4
4
4
2
鍗曡皟閫掑噺锛屽垯鏈?/p>
f '
( x)
cos(
x
)
0
鎭掓垚绔嬶紝
4
鍒?/p>
2k
x
3
2k
锛?/p>
鍗?/p>
2k
5
2k
锛?/p>
鎵�
浠?/p>
2
4
2
4
x
4
4
2k
x
4
2k
锛?/p>
k
Z
锛屽綋
k
0
鏃讹紝
x
5
锛屽張
x
锛屾墍浠?/p>
鏈?/p>
4
2
,
5
锛?/p>
4
4
2
4