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(-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
(,y1)、 (,y2)、 (,y3)是该二次函数图象上的三点,则y1、 y2、 y3的大小关系是-----------------------------------------------( ) A.y2< y1< y3 B. y1< y2< y3 C. y3< y2< y1 y2< y3< y1
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DEL../Y3/F4 DEL X2/Y3/F4 DEL Y3/F4 DEL/Y3/F4
X5, Y2 X3, Y2 X4, Y3 X4, Y1
X1 X2 (Xl,X2) (Xl,X2,X3,X4)