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微分一元微分定義設函數y = f(x)在x.的鄰域內有定義,x0及x0 +Δx在此區間內.如果函數的增量Δy = f(x0 +Δx)−;f(x0)可表示為Δy = AΔx0 + o(Δx0)(其中A是不依賴於Δx的常數),而o(Δx0)是比Δx高階的無…
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