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方程式的簡單輸入 課本裡的方程式也可以用按鍵簡單輸入 ． 常用函數 三角反三角對數指數，冪次冪次方根，√，平方，立方根，逆數，亂數，階乘，π ．記憶保護功\能 ．分數計算 ．時間計.
Sonequa MartinGreen on Finding Her 'Worth' as First Black Female 'Star
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