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y3<y2<y1 y2<y3<y1 y1<y2<y3 y1<y3<y2
if(x>0)y=1 else if(x<0)y=-1; else y=O; if( if(x>0)y=1; else if(x<0)y=-1; y=-1; if( if(x>0)y=1; else if(x==0)y=0; else y=-1; y=0; if(x>=0) if(x>0)y=1; else y=-1;
Y1-Y988 Y1-Y998 Y1-Y898 Y1-Y999
(-3,y1), (-2,y2), (-1,y3)三点都在函数y=-的图象上,则y1、y2、y3的大小关系是( ). A.y1>y2>y3 B.y1<y2<y3 C.y1=y2=y3 y1<y3<y2
c1y1+c2y2+y3 c1y1+c2y2-(c1+c3)y3 c1y1+c2y2-(1-c1-c2)y3 c1y1+c2y2+(1-c1-c2)y3
y=C(y1-y2) y=C(y1+y2) y=y1+C(y1+y2) y=y1+C(y1-y2)
x=1,y=1 x=2,y=2 x=2,y=1 x=1,y=1 x=1,y=1 x=1,y=1 x=2,y=1 x=2,y=1
Y1~Y098 Y1~Y198 Y1~Y298 Y1~Y498
if(x>0)y=1
else if(x<0)y=-1;
else y=O; if(x)
if(x>0)y=1;
else if(x<0)y=-1; y=-1;
if(x)
if(x>0)y=1;
else if(x==0)y=0;
else y=-1; y=0;
if(x>=0)
if(x>0)y=1;
else y=-1;
if(x>0)y=1; else if(x<0)y=-1; else y=0; else y=0; if( if(x>0)y=1; else if(x<0)y=-1; y=-1; if( if(x>0)y=1; else if(x==0)y=0; else y=-1; y=0; if(x>=0) if(x>0)y=1; else y=-1:
y1>y2>y3 y1>y3>y2 y2>y3>y1 y3>y2>y1
(x+y+1)(x-y-1) (x+y-1)(x-y-1) (x+y-1)(x-y+1) (x-y+1)(x+y+1)
y1>y2>y3 y123 y3>y1>y2 y312
y312 y123 y3>y1>y2 y1>y2>y3
c1y1+c2y2 c1Y1(x)+c2Y2(x) c1y1+c2y2+Y1(x) c1y1+c2y2+Y1(x)+Y2(x)
y3<y2<y1 y1<y2<y3 y2<y1<y3 y2<y3<y1
y=c(y1-y2) y=c(y1+y2) y=y1+c(y1+y2) y=y1+c(y1-y2)
if(x>0)y=1
else if(x<0)y=-1;
else y=O; if(x)
if(x>0)y=1;
else if(x<0)y=-1; y=-1;
if(x)
if(x>0)y=1;
else if(x==0)y=0;
else y=-1; y=0;
if(x>=0)
if(x>0)y=1;
else y=-1;
MC(Y1+Y2)=MR1(Y1)=MR2(Y2 MR2(Y2)>MC(Y1+Y2)=MR1(Y1) MR1(Y1)>MC(Y1+Y2)=MR2(Y2) MR1(Y1)=MR2(Y2)=MC(Y1+Y2)
x=1,y=1
x=2,y=2 x=2,y=1
x=1,y=1 x=1,y=1
x=1,y=1 x=2,y=1
x=2,y=1