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房间中冷却的咖啡的温度 T (°C)遵循 T(t) = 20 + 70 * 0,9^t ( t 以分钟为单位)。定性地求 T(0) 、和极限(无需正式微积分)。
房间中冷却的咖啡的温度 T (°C)遵循 T(t) = 20 + 70 * 0,9^t ( t 以分钟为单位)。定性地求 T(0) 、和极限(无需正式微积分)。
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