If we want to be a bit more precise, we know that when we change by t, t that's for linear approximation to how the function changes.

如果我们想更加精确一点，我们知道当t变化的时候，乘以导数就出现了，well, t, times, the, derivative, comes, in，这是函数变化量的线性近似。

youdao

If we want to be a bit more precise, we know that when we change by t, t that's for linear approximation to how the function changes.

如果我们想更加精确一点，我们知道当t变化的时候，乘以导数就出现了，well, t, times, the, derivative, comes, in，这是函数变化量的线性近似。

youdao