[問題] 電路 等效電阻
請問這要怎麼求
解答我看不懂
也不知道為什麼圖可以化簡成那樣
麻煩大家了
謝謝
http://i.imgur.com/f4V6HdP.jpg

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推
03/05 20:38, , 1F
03/05 20:38, 1F
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03/05 20:43, , 2F
03/05 20:43, 2F
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03/05 21:49, , 3F
03/05 21:49, 3F
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03/05 22:56, , 4F
03/05 22:56, 4F
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03/05 22:56, , 5F
03/05 22:56, 5F
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03/06 00:50, , 6F
03/06 00:50, 6F

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03/06 00:53, , 7F
03/06 00:53, 7F
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03/06 00:53, , 8F
03/06 00:53, 8F
推
03/06 00:58, , 9F
03/06 00:58, 9F

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03/06 01:00, , 10F
03/06 01:00, 10F
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03/06 01:02, , 11F
03/06 01:02, 11F
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03/06 01:02, , 12F
03/06 01:02, 12F
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03/06 01:07, , 13F
03/06 01:07, 13F
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03/06 07:36, , 14F
03/06 07:36, 14F

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03/06 13:47, , 15F
03/06 13:47, 15F
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03/06 13:47, , 16F
03/06 13:47, 16F
推
03/06 14:23, , 17F
03/06 14:23, 17F