涓撻
07
瀵兼暟鍙婂叾搴旂敤
1
锛庡嚱鏁?/p>
y
锛?/p>
f
(
x
)
鐨勫浘璞″鍥炬墍绀猴紝鍒欏鍑芥暟
y
锛?/p>
f
鈥?
x
)
鐨勫浘璞＄殑澶ц嚧褰㈢姸鏄?/p>
(
)
瑙ｆ瀽锛氱敱
f
(
x
)
鍥捐薄鍏堥檷鍐嶅崌鍚庤秼浜庡钩绋崇煡锛?/p>
f
鈥?
x
)
鐨勫嚱鏁板�煎厛涓鸿礋锛屽啀涓烘锛屽悗涓洪浂锛庢晠閫?/p>
D.
绛旀锛?/p>
D
2
锛庢洸绾?/p>
y
锛?/p>
e
2
x
鍦ㄧ偣
(4
锛?/p>
e
2
)
澶勭殑鍒囩嚎涓庡潗鏍囪酱鎵�鍥翠笁瑙掑舰鐨勯潰绉负
(
)
A.
9
2
e
2
B
锛?/p>
4e
2
C
锛?/p>
2e
2
D
锛?/p>
e
2
瑙ｆ瀽锛氣埖
y
鈥诧紳
1
2
e
2
x
锛屸埓
k
锛?/p>
1
2
e
1
4
2
飩?/p>
锛?/p>
1
2
e
2
锛屸埓鍒囩嚎鏂圭▼涓?/p>
y
锛?/p>
e
2
锛?/p>
1
2
e
2
(
x
锛?/p>
4)
锛屼护
x
锛?/p>
0
锛屽緱
y
锛濓紞
e
2
锛屼护
y
锛?/p>
0
锛?
寰?/p>
x
锛?/p>
2
锛屸埓鎵�姹傞潰绉负
S
锛?/p>
1
2
脳2脳|锛?/p>
e
2
|
锛?/p>
e
2
.
绛旀锛?/p>
D
3
锛?/p>
宸茬煡鍋跺嚱鏁?/p>
f
(
x
)(
x
鈮?)鐨勫鍑芥暟涓?/p>
f
鈥?
x
)
锛?/p>
涓旀弧瓒?/p>
f
(1)
锛?/p>
0
锛?/p>
褰?/p>
x
>0
鏃讹紝
xf
鈥?
x
)<2
f
(
x
)
锛?/p>
鍒欎娇寰?/p>
f
(
x
)>0
鎴愮珛鐨?/p>
x
鐨勫彇鍊艰寖鍥存槸
(
)
A
锛?/p>
(
锛嶁垶锛岋紞1)鈭?0,1)
B
锛?/p>
(
锛嶁垶锛岋紞1)鈭?1锛岋紜鈭?
C
锛?/p>
(
锛?,0)鈭?1锛岋紜鈭?
D
锛?/p>
(
锛?,0)鈭?0,1)
绛旀锛?/p>
D
4
锛?/p>
鑻ュ嚱鏁?/p>
f
(
x
)
锛?/p>
1
3
x
3
锛?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
1
锛?/p>
b
2
x
2
锛?/p>
2
bx
鍦ㄥ尯闂?/p>
[
锛?/p>
3,1]
涓婁笉鏄崟璋冨嚱鏁帮紝
鍒欏嚱鏁?/p>
f
(
x
)
鍦?/p>
R
涓婄殑鏋佸皬鍊间负
(
)
A
锛?/p>
2
b
锛?/p>
4
3
B
锛?/p>
3
2
b
锛?/p>
2
3