2019
骞村寳浜競鍚勫尯楂樹笁涓�妯¤瘯棰樺垎绫绘眹缂?/p>
01
涓夎鍑芥暟
(
鐞嗙
)
1 (2019
骞翠笢鍩庝竴妯＄悊绉?/p>
)
2 (2019
骞磋タ鍩庝竴妯＄悊绉?/p>
)
涓嬪垪鍑芥暟涓紝瀵逛簬浠绘剰
x
飪?/p>
R
锛屽悓鏃舵弧瓒虫潯浠?/p>
(
)
(
)
f
x
f
x
飥?/p>
飥?/p>
鍜?
(
蟺
)
(
)
f
x
f
x
飥?/p>
飥?/p>
鐨勫嚱鏁版槸锛?/p>
D
锛?/p>
锛?/p>
A
锛?/p>
(
)
sin
飥?/p>
f
x
x
锛?/p>
C
锛?/p>
(
)
cos
飥?/p>
f
x
x
锛?/p>
B
锛?/p>
(
)
sin
cos
飥?/p>
f
x
x
x
锛?/p>
D
锛?/p>
2
2
(
)
cos
sin
飥?/p>
飥?/p>
f
x
x
x
3 (2019
骞存湞闃充竴妯＄悊绉?/p>
)
鍦?/p>
ABC
鈻?/p>
涓紝
蟺
4
A
飥?/p>
锛?/p>
2
BC
飥?/p>
锛屽垯鈥?/p>
3
AC
飥?/p>
鈥濇槸鈥?/p>
蟺
3
B
飥?/p>
鈥濈殑锛?/p>
B
锛?/p>
A
锛庡厖鍒嗕笉蹇呰鏉′欢
B
锛庡繀瑕佷笉鍏呭垎鏉′欢
C
锛庡厖瑕佹潯浠?/p>
D
锛庢棦涓嶅厖鍒嗕篃涓嶅繀瑕佹潯
4 (2019
骞翠赴鍙颁竴妯＄悊绉?/p>
)
宸茬煡
tan
2
飥?/p>
飦?/p>
锛屽垯
sin
cos
sin
cos
飥?/p>
飥?/p>
飦?/p>
飦?/p>
飦?/p>
飦?/p>
鐨勫�间负
_______________.
5 (2019
骞撮『涔変竴妯＄悊绉?/p>
)
宸茬煡鍑芥暟
(
)
cos(2
)
cos
2
3
f
x
x
x
飦?
飥?/p>
飥?/p>
飥?/p>
锛屽叾涓?/p>
x
R
飪?/p>
锛岀粰鍑轰笅鍒楀洓涓粨璁?/p>
鈶?/p>
.
鍑芥暟
(
)
f
x
鏄渶灏忔鍛ㄦ湡涓?/p>
飦?/p>
鐨勫鍑芥暟锛?/p>
鈶?/p>
.
鍑芥暟
(
)
f
x
鍥捐薄鐨勪竴鏉″绉拌酱鏄?/p>
2
3
x
飦?/p>
飥?/p>
锛?/p>
鈶?/p>
.
鍑芥暟
(
)
f
x
鍥捐薄鐨勪竴涓绉颁腑蹇冧负
5
(
,0)
12
飦?/p>
锛?/p>
鈶?/p>
.
鍑芥暟
(
)
f
x
鐨勯�掑鍖洪棿涓?/p>
2
,
6
3
k
k
飦?
飦?/p>
飦?/p>
飦?/p>
飪?/p>
飪?
飥?
飥?
飪?
飪?/p>
飪?
飪?
锛?/p>
k
Z
飪?/p>
.
鍒欐纭粨璁虹殑涓暟鏄?/p>
(C)
(A)
1
涓?/p>
(B)
2
涓?/p>
(C)
3
涓?/p>
( D)
4
涓?/p>
6 (2019
骞村欢搴嗕竴妯＄悊绉?/p>
)
鍚屾椂鍏锋湁鎬ц川鈥溾憼鏈�灏忔鍛ㄦ湡鏄?/p>
飦?/p>
锛?/p>
鈶″浘鍍忓叧浜?/p>
3
飦?
飥?
x
瀵圭О锛屸憿鍦?/p>
]
3
,
6
[
飦?
飦?/p>
飥?
涓婃槸澧炲嚱鏁扳�濈殑涓�涓嚱鏁版槸
(C)
A
锛?/p>
)
6
2
sin(
飦?/p>
飥?/p>
飥?/p>
x
y
B
锛?/p>
)
3
2
cos(
飦?/p>
飥?/p>
飥?/p>
x
y
C
锛?/p>
)
6
2
sin(
飦?/p>
飥?/p>
飥?/p>
x
y
D
锛?/p>
)
6
2
cos(
飦?
飥?/p>
飥?/p>
x
y
7 (2019
骞翠笢鍩庝竴妯＄悊绉?/p>
)
8
(2019
骞磋タ鍩庝竴妯＄悊绉?/p>
)
鍦ㄢ柍ABC
涓紝瑙?/p>
A
锛?/p>
B
锛?/p>
C
鎵�瀵圭殑杈瑰垎鍒负
a
锛?/p>
b
锛?/p>
c.
宸茬煡
2
2
2
b
c
a
bc
飥?/p>
飥?/p>
飥?/p>
.
锛堚厾锛?
姹?/p>
A
鐨勫ぇ灏忥紱
锛堚叀锛夊鏋?/p>
6
cos
3
飥?
B
锛?/p>
2
b
飥?/p>
锛屾眰鈻矨BC
鐨勯潰绉?/p>
.
9 (2019
骞存捣娣�涓�妯＄悊绉?/p>
)
宸茬煡鍑芥暟
蟺
蟺
(
)
2sin
cos
6
6
f
x
x
x
飥?/p>
锛岃繃涓ょ偣
(
,
(
)),
(
1,
(
1))
A
t
f
t
B
t
f
t
飥?/p>
飥?/p>
鐨勭洿绾跨殑鏂滅巼
璁颁负
(
)
g
t
锛?/p>
锛堚厾锛夋眰
(0)
g
鐨勫�硷紱
锛?/p>
II
锛夊啓鍑哄嚱鏁?/p>
(
)
g
t
鐨勮В鏋愬紡锛屾眰
(
)
g
t
鍦?/p>
3
3
[
,
]
2
2
飥?/p>
涓婄殑鍙栧�艰寖鍥达紟
10 (2019
骞存湞闃充竴妯＄悊绉?/p>
)
宸茬煡鍑芥暟
2
2
(
)
2sin(
)
cos
sin
cos
f
x
x
x
x
x
飥?/p>
飦?/p>
飥?/p>
飪?/p>
飥?/p>
飥?/p>
锛?/p>
x
飪?/p>
R
锛?/p>
锛堚厾锛夋眰
(
)
2
f
飦?
鐨勫�煎強鍑芥暟
(
)
f
x
鐨勬渶灏忔鍛ㄦ湡锛?/p>
锛堚叀锛夋眰鍑芥暟
(
)
f
x
鍦?/p>
飦?/p>
飦?/p>
0,
蟺
涓婄殑鍗曡皟鍑忓尯闂?/p>
11 (2019
骞翠赴鍙颁竴妯＄悊绉?/p>
)
宸茬煡鍑芥暟
2
(
)
cos(2
)
2sin
1
3
f
x
x
x
飥?/p>
飥?
飥?/p>
飥?/p>
飦?
锛?/p>
锛堚厾锛夋眰鍑芥暟
(
)
f
x
鐨勬渶灏忔鍛ㄦ湡锛?/p>
锛堚叀锛夋眰鍑芥暟
(
)
f
x
鍦ㄥ尯闂?/p>
[0,
]
2
飦?
涓婄殑鏈�澶у�煎拰鏈�灏忓�?/p>
.
12 (2019
骞寸煶鏅北涓�妯＄悊绉?/p>
)
鍦ㄢ柍
ABC
涓紝瑙?/p>
A
B
C
锛?
锛?/p>
鐨勫杈瑰垎鍒负
a
b
c
锛?/p>
锛?/p>
锛屼笖
a
b
c
飥?/p>
飥?/p>
锛?/p>
3
2
sin
a
b
A
飥?/p>
锛?
锛堚厾锛夋眰瑙?/p>
B
鐨勫ぇ灏忥紱
锛堚叀锛夎嫢
2
a
飥?/p>
锛?/p>
7
b
飥?/p>
锛屾眰
c
杈圭殑闀垮拰鈻?/p>
ABC
鐨勯潰绉?/p>
13 (2019
骞撮『涔変竴妯＄悊绉?/p>
)
宸茬煡
ABC
涓紝瑙?/p>
A
锛?/p>
B
锛?/p>
C
鎵�瀵圭殑杈瑰垎鍒?/p>
涓?/p>
a
锛?/p>
b
锛?/p>
c
锛屼笖婊¤冻
3
sin
(
3
cos
sin
)
2
A
A
A
飥?/p>
飥?/p>
锛堚厾锛夋眰瑙?/p>
A
锛?/p>
锛堚叀锛夎嫢
2
2
a
飥?/p>
锛?/p>
2
3
ABC
S
飥?/p>
锛屾眰
b
锛?/p>
c
鐨勫�?/p>
.
14 (2019
骞村欢搴嗕竴妯＄悊绉?/p>
)
鍦ㄤ笁瑙掑舰
ABC
涓紝瑙?/p>
C
B
A
,
,
鎵�瀵圭殑杈瑰垎鍒负
c
b
a
,
,
锛屼笖
2
飥?/p>
a
锛?/p>
4
飦?
飥?/p>
C
锛?
5
3
cos
飥?/p>
B
锛?/p>
锛堚厾锛夋眰
A
sin
鐨勫�硷紱
锛堚叀锛夋眰
ABC
飦?/p>
鐨勯潰绉?/p>
2019
骞村寳浜競鍚勫尯楂樹笁涓�妯¤瘯棰樻眹缂?/p>
--
涓夎鍑芥暟
(
鐞嗙
)
绛旀锛?/p>
1
锛?/p>
D
锛?/p>
2
锛?/p>
D
锛?/p>
3
锛?/p>
B
锛?/p>
4
锛?/p>
1
3
锛?/p>
5
锛?/p>
C
锛?/p>
6
锛?/p>
C
锛?/p>
7
锛?/p>