1
锛?/p>
(2018路
鐩婇槼銆佹箻娼皟鐮?/p>
)
鍦ㄥ钩闈㈢洿瑙掑潗鏍囩郴涓紝鏇茬嚎
C
鐨勫弬鏁版柟绋嬩负
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飪?/p>
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锛?/p>
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伪
y
锛?/p>
sin
伪
(
伪
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)
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浠ョ洿瑙掑潗鏍囩郴鐨勫師鐐?/p>
O
涓烘瀬鐐癸紝
x
杞寸殑姝ｅ崐杞翠负鏋佽酱寤虹珛鏋佸潗鏍囩郴锛?/p>
鐩寸嚎
l
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3
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1
2
鐩寸嚎
l
涓庢洸绾?/p>
C
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A
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B
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(1)
姹傜洿绾?/p>
l
鐨勭洿瑙掑潗鏍囨柟绋嬶紱
(2)
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P
(1
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0)
锛屾眰
|
P
A
|路
|
PB
|
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3
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1
2
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cos
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cos
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3
锛?/p>
蟻
sin
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sin
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3
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1
2
锛?/p>
鍙?/p>
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cos
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x
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鎵�浠ョ洿绾?/p>
l
鐨勭洿瑙掑潗鏍囨柟绋嬩负
x
锛?/p>
3
y
锛?/p>
1
锛?/p>
0.
(2)
鐢?/p>
飪?/p>
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x
锛?/p>
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伪
y
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sin
伪
(
伪
涓哄弬鏁?/p>
)
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C
鐨勬櫘閫氭柟绋嬩负
x
2
锛?/p>
4
y
2
锛?/p>
4
锛?/p>
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P
(1
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l
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l
鐨勫弬鏁版柟绋嬩负
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x
锛?/p>
3
2
t
锛?/p>
1
y
锛?/p>
1
2
t
(
t
涓哄弬鏁?/p>
)
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x
2
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4
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2
锛?/p>
4
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7
t
2
锛?/p>
4
3
t
锛?/p>
12
锛?/p>
0
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t
1
路
t
2
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12
7
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鏁?/p>
|
P
A
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|
PB
|
锛?/p>
|
t
1
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|
t
2
|
锛?/p>
|
t
1
路
t
2
|
锛?
12
7
.
2
锛?/p>
(2018路
鍚堣偉绗竴娆¤川閲忔娴?/p>
)
鍦ㄧ洿瑙掑潗鏍囩郴
xOy
涓紝鏇茬嚎
C
1
锛?/p>
飪?/p>
飪?/p>
飪?/p>
飪?
飪?/p>
x
锛?/p>
3cos
胃
y
锛?/p>
2sin
胃
(
胃
涓哄弬鏁?/p>
)
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鍦ㄤ互
O
涓烘瀬鐐癸紝
x
杞寸殑姝ｅ崐杞翠负鏋佽酱鐨勬瀬鍧愭爣绯讳腑锛屾洸绾?/p>
C
2
锛?/p>
蟻
锛?/p>
2cos
胃
锛?/p>
0.
(1)
姹傛洸绾?/p>
C
2
鐨勭洿瑙掑潗鏍囨柟绋嬶紱
(2)
鑻ユ洸绾?/p>
C
1
涓婃湁涓�鍔ㄧ偣
M
锛屾洸绾?/p>
C
2
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锛屾眰
|
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|
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鐢?/p>
蟻
锛?/p>
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胃
锛?/p>
0
寰?/p>
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2
锛?/p>
2
蟻
cos
胃
锛?/p>
0.
鍥犱负
蟻
2
锛?/p>
x
2
锛?/p>
y
2
锛?/p>
蟻
cos
胃
锛?/p>
x
锛屾墍浠?/p>
x
2
锛?/p>
y
2
锛?/p>
2
x
锛?/p>
0
锛?/p>
鍗虫洸绾?/p>
C
2
鐨勭洿瑙掑潗鏍囨柟绋嬩负
(
x
锛?/p>
1)
2
锛?/p>
y
2
锛?/p>
1.
(2)
鐢?/p>
(1)
鍙煡锛屽渾
C
2
鐨勫渾蹇冧负
C
2
(1
锛?/p>
0)
锛屽崐寰勪负
1.
璁炬洸绾?/p>
C
1
鐨勫姩鐐?/p>
M
(3cos
胃
锛?/p>
2sin
胃
)
锛?/p>