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来自MSN
28 天
数学中,有哪些常数被发现时被认为是超越数,结果最后被证实是个 ...
实际计算并不复杂, u = 0.2649320846\dots ,它满足 u\sqrt{1-u^2} + \arcsin u = \dfrac{\pi}{6} 。 但并不知道 u 是否是代数数。 第二个是山羊放牧问题: 如下图所 ...
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