Traditional Culture Encyclopedia - Photography major - Y = How to draw two thirds of the image?
Y = How to draw two thirds of the image?
List: x=-5, -4, -3, -2,-1, 1, 2, 3, 4, 5 correspond to y = 5/2, 2, 3/2, 1,1,respectively.
Description: (-5.5/2)...(5,5/2)
Connection: Connect the points just described in turn from left to right with a smooth curve.
Notice the two curves in the second quadrant and the fourth quadrant. Points (-1, 1/2) and (1/-kloc-0//2) should not be connected.
Quadrant is a rectangular coordinate system
The founder is Descartes. Mainly used in trigonometry and complex Argentine coordinate system (complex plane). In the plane rectangular coordinate system, the plane is divided into four areas, namely four quadrants, by the horizontal axis and the vertical axis. The quadrant is divided into four quadrants, I, II, III and IV, with the origin as the center, the horizontal axis and the vertical axis as the dividing line, and counterclockwise from the upper right. The origin and coordinate axis do not belong to any quadrant.
Above content reference: Baidu Encyclopedia-Quadrant
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