K12
瀛︿範鏁欒偛璧勬簮
K12
瀛︿範鏁欒偛璧勬簮
浠ｆ暟缁煎悎棰?/p>
锛?/p>
2017
鏄屽钩浜屾ā锛?/p>
27.
鍦ㄥ钩闈㈢洿瑙掑潗鏍囩郴
xOy
涓紝
鎶涚墿绾?/p>
)
0
(
4
2
飩?/p>
飥?/p>
飥?/p>
m
mx
mx
y
涓?/p>
x
杞翠氦浜?/p>
A
锛?/p>
B
涓ょ偣
锛堢偣
A
鍦ㄧ偣
B
鐨勫乏渚э級
.
锛?/p>
1
锛夋眰鐐?/p>
A
锛?/p>
B
鐨勫潗鏍囧強鎶涚墿绾跨殑瀵圭О杞达紱
锛?/p>
2
锛夎繃鐐?/p>
B
鐨勭洿绾?/p>
l
涓?/p>
y
杞翠氦浜庣偣
C
锛屼笖
2
tan
飥?/p>
飪?/p>
ACB
锛岀洿鎺ュ啓鍑虹洿绾?/p>
l
鐨勮〃杈惧紡锛?/p>
锛?/p>
3
锛夊鏋滅偣
)
(
1
n
x
P
锛?/p>
鍜岀偣
)
(
2
n
x
Q
锛?/p>
鍦ㄥ嚱鏁?/p>
)
0
(
4
2
飩?/p>
飥?/p>
飥?/p>
m
mx
mx
y
鐨勫浘璞′笂锛?/p>
PQ=
2
a
涓?/p>
2
1
x
x
飥?/p>
锛屾眰
2
6
2
2
1
飥?/p>
飥?/p>
飥?/p>
a
ax
x
鐨勫�?/p>
.
锛?/p>
2017
鎴垮北浜屾ā锛?/p>
26.
濡傚浘锛屽湪骞抽潰鐩磋鍧愭爣绯?/p>
xoy
涓紝宸茬煡鐐?/p>
(
1,0)
P
飥?/p>
锛?/p>
C(
2
1,1)
飥?/p>
锛?/p>
(0,
3)
D
飥?/p>
锛?/p>
A
锛?/p>
B
鍦?/p>
x
杞翠笂锛屼笖
P
涓?/p>
AB
涓偣锛?/p>
1
CAP
S
飦?/p>
飥?/p>
.
锛?/p>
1
锛夋眰缁忚繃
A
銆?/p>
D
銆?/p>
B
涓夌偣鐨勬姏鐗╃嚎鐨勮〃杈惧紡锛?/p>
锛?/p>
2
锛夋妸鎶涚墿绾垮湪
x
杞翠笅鏂圭殑閮ㄥ垎娌?/p>
x
杞村悜涓婄炕鎶橈紝寰楀埌涓�涓柊鐨勫浘璞?/p>
G
锛岀偣
Q
鍦ㄦ鏂板浘璞?/p>
G
涓婏紝涓?
APQ
APC
S
S
飦?/p>
飦?/p>
飥?/p>
锛屾眰鐐?/p>
Q
鍧愭爣锛?/p>
锛?/p>
3
锛夎嫢涓�涓姩鐐?/p>
M
鑷偣
N
锛?/p>
0,-1
锛夊嚭鍙戯紝鍏堝埌杈?/p>
x
杞翠笂鏌愮偣锛堣涓虹偣
E
锛?/p>
锛屽啀鍒拌揪鎶涚墿绾跨殑瀵圭О杞翠笂鏌愮偣
锛堣涓虹偣
F
锛?/p>
锛屾渶鍚庤繍鍔ㄥ埌鐐?/p>
D
锛屾眰浣跨偣
M
杩愬姩鐨勬�昏矾绋嬫渶鐭殑鐐?/p>
E
銆佺偣
F
鐨勫潗鏍囷紟