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鏁欏鐩爣
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C
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锛氱敳灏勫嚮
6
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8
銆?/p>
7
銆?/p>
9
銆?/p>
9
銆?/p>
7
銆?/p>
8
锛岄偅涔堢敳杩欐灏勫嚮鐨勬柟宸?
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S
2
锛岄偅涔?/p>
S
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鑰佸笀鐐硅瘎锛?/p>
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x
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锛屾墍浠ユ墍
姹傜偣鐨勫潗鏍?/p>
(
3
锛?/p>
3
)
锛?/p>
闂
2
锛氱敱鍕捐偂瀹氱悊寰?/p>
AB
=
10
锛?/p>
闂
3
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S
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4
6
锛?/p>
浜屻�佹帰绱㈡柊鐭?/p>