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我想写下(但不评估)一个迭代积分,它给出了位于所有三个圆柱体中的固体边界的表面积:
x^2 + z^2 = 9, y^2 + z^2 = 9, and x^2 + y^2 = 4
我无法找到迭代双积分的边界。可以使用对称性找到实体的表面积,因为所有圆柱体都以 (0,0,0) 为中心。
实体边界的可视化