The geometric meaning of vector point multiplication is that vector point multiplication can be used to calculate the included angle between two vectors, and then judge whether these two vectors are orthogonal or vertical, and it can also be used to calculate the projection length of one vector in the other vector direction. Mathematically, a vector, also called a vector, refers to a quantity with a size and a direction, which can be visually represented as a line segment with an arrow.

The history of media development:

Vectors were originally applied to physics. Many physical quantities such as force, velocity, displacement, electric field intensity and magnetic induction intensity are vectors.

Around 350 BC, Aristotle, a famous ancient Greek scholar, knew that force can be expressed as a vector, and the resultant force of two forces can be obtained through the famous parallelogram rule. The word vector comes from directed line segments in mechanics and analytic geometry. Newton, a great British scientist, was the first to use directed line segments to represent vectors.

Judging from the history of mathematical development, the vector structure of space has not been recognized by mathematicians for a long time in history. It was not until the end of 19 and the beginning of the 20th century that people linked the nature of space with vector operation, making vector a mathematical system with excellent universality of operation.