极坐标求积分,极径的上限有时候是三角函数,有时候是数值,如何确定该写数值还是三角函数� 知乎 Template




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tomski极坐标求积分,极径的上限有时候是三角函数,有时候是数值,如何确定该写数值还是三角函数� 知乎 coloring