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**Gabriel号角悖论。**考虑由绕x轴旋转 y = 1/x 、 x in [1, +infinity) 生成的曲面。(a)计算立体的体积。(b)证明侧面积是无限的。(c)解释该悖论。
**Gabriel号角悖论。**考虑由绕x轴旋转 y = 1/x 、 x in [1, +infinity) 生成的曲面。(a)计算立体的体积。(b)证明侧面积是无限的。(c)解释该悖论。
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