It's the same vector So, a lot of vectors we'll draw starting at the origin but we don't have to.

它们是同一个向量，通常我们都选原点作为向量的起点，但是我们不一定要这么做。

youdao

That would be given by a vector field that points toward the origin and whose magnitude is inversely proportional to the square of a distance from the origin.

力场由一个指向原点的向量场给出，并且此向量场的大小，与其到原点的距离的平方成反比。

youdao

So, the position of this point, p, is going to be the same as OP knowing the vector OP from the origin to this moving point.

点p的位置就是，从原点指向这个运动点的向量。

youdao