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)10或-10 ( )10 ( )-10 ( )以上答案都不对
y3<y2<y1 y1<y2<y3 y2<y1<y3 y2<y3<y1
y=cy1(x)+y2(x) y=y1(x)+c2y2(x) y=c[y1(x)+y2(x)] y=c1y(x)-y2(x)
X1=0,X2=600,Y1=0,Y2=700 Y1=0,Y2=600,X1=0,X2=700 X1=0,X2=0,Y1=600,Y2=700 Y1=0,Y2=0,X1=600,X2=700
x1=2 y1=2
x2=2 y2=1 x1=2 y1=2
x2=2 y2=2 x1=2 y1=1
x2=2 y2=2 x1=2 y1=1
x2=2 y2=1
x1=2 y1=2 x2=2 y2=1 x1=2 y1=2 x2=2 y2=2 x1=2 y1=1 x2=2 y2=2 x1=2 y1=1 x2=2 y2=1
(4x-3y)(-3y-4x) (2x2-y2)(2x2+y2) (a+b-c)(-c-b+a) (-x+y)(x-y)
X5, Y2 X3, Y2 X4, Y3 X4, Y1
)y1 >y2 ( )y1 =y2 ( )y1 )不能比较