It depends what the problem is asking the question is, is it enough to find the components of a vector or do we have to find the equation of a line?

这都是根据题目要求而定的，有一个问题是，找出向量的分量就足够了吗？，还是说我们需要解出一条直线的方程？

youdao

Indirect method can adjust the characteristic line equation in time based on the status of practical process, thus the forming precision can be improved.

间接法能够根据板料实际加工状态及时调整特征方程，提高了成形精度。

youdao

Based on the equation of action line for cycloidal pump, a geometrical mathematical model is built to solve instantaneous flow, displacement, average flow and the pulsation of the pump.

根据摆线泵的啮合线方程，建立了用几何法求解摆线泵的瞬时流量、排量、流量脉动率的数学模型。

youdao

So it doesn't really matter, but that's actually the equation of that line.

这个并不是极其重要,但这是该直线的方程

耶鲁公开课 - 博弈论课程节选

Now, just to repeat, again I know I've got some math phobics in the audience, let me just slow down a second, all I'm doing here is I'm saying look at this equation of the pink line, look at this equation of the blue line, X is when they cross, i.e., they are equal to each other.

我再重复一遍,我知道你们之中有些人数学不怎么好,我放慢一点说,我是这么解的,看这条粉线的方程,还有这条蓝线的方程,X是二者的交点,也就是说这点两个方程相等

耶鲁公开课 - 博弈论课程节选

The equation of the trend line shows that every point on the freedom index was worth 0.36% annual return over the past year.

FORBES: 1-Year Freedom Investing Returns

The equation of the trend line shows that every point on the freedom index was worth 0.33% annual return over the past year.

FORBES: 10-Year Freedom Investing Returns

The equation of the trend line shows that every point on the freedom index was worth 0.80% annual return over the past 3 years.

FORBES: 3-Year Freedom Investing Returns