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rElAtED rAtEs 微积分

Solution: Let V, r and h be the volume,radius and height of the tree trunk respectively. V = πr²h dV/dt = 2πrh(dr/dt) + πr²(dh/dt) = 2π×1.5×50×0.25 + π1.5²×1 = 39.75π If we use algebraic method to solve it, we ca...

完整的句子呢?这似乎不是专有数学用语

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