The basic formula of the plane rectangular coordinate system
The basic formula for the number of shaft
- Displacement vector
- Displacement from A to B, denoted as
- With an equal number line is called a vector of the vector length and the like
- Length of the vector, positive or negative, is called the number of vector coordinates or
- Equivalent vector with the vector number and the like to the long axis
And the definition of vector coordinates rational operation is made, any number of three axes A, B, C, have a relation
Distance A, B two points
The basic formula of the plane rectangular coordinate system
Real ordered pair (X, y) corresponding to the point P, x is called the abscissa of the point P, y is called the ordinate of the point P
Distance between two points formula
The midpoint formula
