[積分] 積分
1
S -------- dA
1+kcosA
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60.198.69.14 06/23, , 1F
60.198.69.14 06/23, 1F
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60.198.69.14 06/23, , 2F
60.198.69.14 06/23, 2F
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140.112.18.5 06/23, , 3F
140.112.18.5 06/23, 3F
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218.172.72.133 06/23, , 4F
218.172.72.133 06/23, 4F
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