引入斜座標.圖中的"點"為(2,5).延拓的點在X=2,X=5,X+Y=6.設三點(X1,Y1),(X2,Y2),(X3,Y3)得方程
X=X1,Y=Y1,X1+Y1=6, X=X2,...X3+Y3=6.當X1=2,Y1=0, X2=4,Y2=2, X3=0,Y3=4.解集填平所有的點.
引入斜座標.圖中的"點"為(2,5).延拓的點在X=2,X=5,X+Y=6.設三點(X1,Y1),(X2,Y2),(X3,Y3)得方程
X=X1,Y=Y1,X1+Y1=6, X=X2,...X3+Y3=6.當X1=2,Y1=0, X2=4,Y2=2, X3=0,Y3=4.解集填平所有的點.
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