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证明。验证格林公式 A = (1)/(2)\oint_(d R)(x dy - y dx) 对单位正方形 的正确性,通过计算每条边上的线积分。
证明。验证格林公式 A = (1)/(2)\oint_(d R)(x dy - y dx) 对单位正方形 的正确性,通过计算每条边上的线积分。
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