在屏幕上显示0~360度的cos(x)曲线与直线f(x)=45*(y-1)+31的迭加图形。其中cos(x)图形用“*”表示，f(x)用“+”表示，在两个图形相交的点上则用f(x)图形的符号。 图形迭加的关键是要在分别计算出同一行中两个图形的列方向点坐标后，正确判断相互的位置关系。

在屏幕上显示0~360度的cos(x)曲线与直线f(x)=45*(y-1)+31的迭加图形。其中cos(x)图形用“*”表示，f(x)用“+”表示，在两个图形相交的点上则用f(x)图形的符号。 -On the screen 360 degrees 0 ~ cos (x) curve and a straight line f (x) = 45* (y-1)+31 Superposition of graphics. In which cos (x) graphics with "*"　that, f (x) with "+"　indicated that the point of intersection of the two graphics on the use of f (x) graphical symbols. Graphical superposition of the key is to calculate in the same line, respectively, the two graphics point out the direction of coordinates, the correct position to determine the relationship between each other. On the screen 360 degrees 0 ~ cos (x) curve and a straight line f (x) = 45* (y-1)+31 Superposition of graphics. In which cos (x) graphics with "*"　that, f (x) with "+"　indicated that the point of intersection of the two graphics on the use of f (x) graphical symbols.