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Created July 26, 2025 08:52

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常用 `cmath` 函式

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常用 `cmath` 函式

函式名稱	功能描述	範例
`sqrt(x)`	開根號，僅適用於 x ≥ 0	`sqrt(9.0)` → `3.0`
`pow(x, y)`	計算 x 的 y 次方	`pow(2.0, 3.0)` → `8.0`
`abs(x)`	計算整數的絕對值	`abs(-5)` → `5`
`fabs(x)`	計算浮點數的絕對值	`fabs(-3.2)` → `3.2`
`ceil(x)`	向上取整（天花板函式）	`ceil(2.3)` → `3.0`
`floor(x)`	向下取整（地板函式）	`floor(2.9)` → `2.0`
`round(x)`	四捨五入	`round(2.5)` → `3.0`
`fmod(x, y)`	求浮點數 x 除以 y 的餘數	`fmod(5.3, 2.0)` → `1.3`
`hypot(x, y)`	計算 √(x² + y²)，常用於畢氏定理	`hypot(3.0, 4.0)` → `5.0`

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