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1.
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2.
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3.
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1
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2
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r
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a,b,
r
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x
杞翠笂锛?/p>
锛?/p>
鈶跺渾蹇冨湪
y
杞翠笂锛?/p>
锛涒懛鍦嗕笌
x
杞寸浉鍒囷細
锛?/p>
鈶稿渾涓?/p>
y
杞寸浉鍒囷細
锛?/p>
鈶瑰渾涓庝袱鍧愭爣杞撮兘鐩稿垏锛?/p>
銆?/p>
2
銆佸啓鍑轰笅鍒楀悇鍦嗙殑鏂圭▼锛?/p>
锛?/p>
1
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3
锛?/p>
锛?/p>
2
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4
,
3
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鍗婂緞鏄?/p>
5
锛?/p>
锛?/p>
3
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1
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5
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3
,
8
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C
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x
杞翠笂
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PQ
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2
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B(-2,-5)
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0
3
2
飥?/p>
飥?/p>
飥?/p>
y
x
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鍏�佽鍚庝綔涓氾細
1
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0
70
3
4
飥?/p>
飥?/p>
飥?/p>
y
x
鐩稿垏锛屾眰鍦嗙殑鏂圭▼銆?/p>
2
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