由對稱性,隻用算第一象限的45度角之下,得:
x^2 + y^2 = (1-x)^2
用極坐標大概可以積分求得臨界曲線內部麵積
由對稱性,隻用算第一象限的45度角之下,得:
x^2 + y^2 = (1-x)^2
用極坐標大概可以積分求得臨界曲線內部麵積
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