绗簲绔?/p>
骞抽潰鍚戦噺
5.3
骞抽潰鍚戦噺鐨勬暟閲忕Н
鐞?
1
锛庡悜閲忕殑澶硅
宸茬煡涓や釜闈為浂鍚戦噺
a
鍜?/p>
b
锛屼綔
OA
鈫?/p>
锛?/p>
a
锛?/p>
OB
鈫?
锛?/p>
b
锛屽垯鈭?/p>
AOB
灏辨槸鍚戦噺
a
涓?/p>
b
鐨勫す瑙掞紝鍚戦噺澶硅鐨?/p>
鑼冨洿鏄細
[0
锛?/p>
蟺
]
锛?/p>
2
锛庡钩闈㈠悜閲忕殑鏁伴噺绉?/p>
瀹氫箟
璁句袱涓潪闆跺悜閲?/p>
a
锛?/p>
b
鐨勫す瑙掍负
胃
锛屽垯鏁伴噺
|
a
||
b
|路cos
胃
鍙仛
a
涓?/p>
b
鐨勬暟閲忕Н锛岃浣?/p>
a
路
b
鎶曞奖
|
a
|cos
胃
鍙仛鍚戦噺
a
鍦?/p>
b
鏂瑰悜涓婄殑鎶曞奖锛?/p>
|
b
|cos
胃
鍙仛鍚戦噺
b
鍦?/p>
a
鏂瑰悜涓婄殑鎶曞奖
鍑犱綍鎰忎箟
鏁伴噺绉?/p>
a
路
b
绛変簬
a
鐨勯暱搴?/p>
|
a
|
涓?/p>
b
鍦?/p>
a
鐨勬柟鍚戜笂鐨勬姇褰?/p>
|
b
|cos
胃
鐨?/p>
涔樼Н
3.
骞抽潰鍚戦噺鏁伴噺绉殑鎬ц川
璁?/p>
a
锛?/p>
b
閮芥槸闈為浂鍚戦噺锛?/p>
e
鏄崟浣嶅悜閲忥紝
胃
涓?/p>
a
涓?/p>
b
(
鎴?/p>
e
)
鐨勫す瑙掞紟鍒?/p>
(1)
e
路
a
锛?/p>
a
路
e
锛?/p>
|
a
|cos
胃
.
(2)
a
鈯?/p>
b
鈬?/p>
a
路
b
锛?/p>
0.
(3)
褰?/p>
a
涓?/p>
b
鍚屽悜鏃讹紝
a
路
b
锛?/p>
|
a
||
b
|
锛?/p>
褰?/p>
a
涓?/p>
b
鍙嶅悜鏃讹紝
a
路
b
锛濓紞
|
a
||
b
|.
鐗瑰埆鍦帮紝
a
路
a
锛?/p>
|
a
|
2
鎴?/p>
|
a
|
锛?/p>
a
路
a
.
(4)cos
胃
锛?/p>
a
路
b
|
a
||
b
|
.
(5)|
a
路
b
|鈮
a
||
b
|.
4
锛庡钩闈㈠悜閲忔暟閲忕Н婊¤冻鐨勮繍绠楀緥
(1)
a路b
锛?/p>
b路a
锛?/p>
(2)(
位
a
)路
b
锛?/p>
位
(
a路b
)
锛?/p>
a
路(
位
b
)(
位
涓哄疄鏁?/p>
)
锛?/p>
(3)(
a
锛?/p>
b
)路
c
锛?/p>
a路c
锛?/p>
b路c
.
5
锛庡钩闈㈠悜閲忔暟閲忕Н鏈夊叧鎬ц川鐨勫潗鏍囪〃绀?/p>
璁惧悜閲?/p>
a
锛?/p>
(
x
1
锛?/p>
y
1
)
锛?/p>
b
锛?/p>
(
x
2
锛?/p>
y
2
)
锛屽垯
a路b
锛?/p>
x
1
x
2
锛?/p>
y
1
y
2
锛岀敱姝ゅ緱鍒?/p>
(1)
鑻?/p>
a
锛?/p>
(
x
锛?/p>
y
)
锛屽垯
|
a
|
2
锛?/p>
x
2
锛?/p>
y
2
鎴?/p>
|
a
|
锛?/p>
x
2
锛?/p>
y
2
.