YLL討論網

由 **coiltz41** 於星期日十月 29, 2006 8:28 am

　這是「微分」。

　將 x-t 圖形一次微分求得的導數就是順時速度。

　將 x-t 圖形二次微分求得的二階導數就是順時加速度。

由 **頑皮的猴子** 於星期一七月 31, 2006 4:55 pm

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