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坐標系 （coordinate system）是一特定的 位置 註記系統 [4] （參考系 [5] ），用以確定某點或某目標的空間位置；其定義為：对于一个 n 维 系统，能够使每一个点（目標）和一组 n 个 标量 （有序數組）构成 一一对应 的系统 [6] [7] 。. 若有序數組只是一個數的坐標系 ...
Dec 21, 2020 · A coordinate system is a scheme that allows us to identify any point in the plane or in three-dimensional space by a set of numbers. In rectangular coordinates these numbers are interpreted, roughly speaking, as the lengths of the sides of a rectangular "box.'' In two dimensions you may already be familiar with an alternative, called polar ...
Equatorial coordinate system. A coordinate system is a system of numbers used to uniquely determine the position of a point. For two-dimensional systems, the numbers ( scalars) are in ordered pairs. More dimensions call for more numbers. For example, (3) is one-dimensional, (1, 4) is two-dimensional, (1, 5, 9) is three-dimensional, (2, 6, 5, 3 ...
A Cartesian coordinate system or Coordinate system is used to locate the position of any point and that point can be plotted as an ordered pair (x, y) known as Coordinates. The horizontal number line is called X-axis and the vertical number line is called Y-axis and the point of intersection of these two axes is known as the origin and it is ...
Just like in the alphabets x comes before y in the same way in coordinates system the x-axis comes first and then the y-axis. So for example in (2,3) the x-axis coordinate is 2 and the y-axis coordinate is 3. This is extra information - x-axis is also called the abscissa and the y-axis is also called the ordinate.
- 7 min
Intro to the coordinate plane. Descartes created a system of two perpendicular axes (the x and y axes) which could be used to plot points in a plane. This enabled the visualization of algebraic equations in geometric form. For example, a linear equation like y = 2x + 1 could be plotted as a line on the coordinate plane, while a quadratic ...
- 11 min
- Sal Khan
