time derivative

基本解释

I take the time derivative.
我會計算時間導數。
I'm going to take the time derivative just as I did in the case of the spring.
我將要提取時間,就像我在,彈力那個例子裡那樣。
We've done this before-- this is the conservation of energy, and in order to find the period of the simple harmonic oscillation, we take the time derivative.
以前算過-,這是能量守恒，爲了算出,簡諧振蕩的周期，我們求時間導數。

If you took the derivative of this, you will get the velocity at time t, it would be: v=v0+at.
如果你對它求導,你就可以知道 t 時刻的速度,即,v=v0+at
耶魯公開課 - 基礎物理課程節選
And the mathematics of that equation involved a double derivative in time of x 0 plus some constant times x equals zero with some constraints on it.
那個數學方程式,包括了x對時間的二堦導數,加上常數乘以x等於,還有一些限制條件。
麻省理工公開課 - 固態化學導論課程節選
If you want to know how fast it's moving at a given time, if you want to know the velocity, I just take the derivative of this answer, which is 10-10t.
如果你想知道它在給定時刻的運動有多快,如果你想知道它的速度,我衹要對這個式子求導,得到10-10t
耶魯公開課 - 基礎物理課程節選

From the looks of it ECRI takes the first principle component of these four variables and then charts the first time derivative.
FORBES: On Lakshum Achuthan and ECRI: This is Becoming Embarrassing for Everyone