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如图是抛物线y1=ax2+bx+c(a≠0)图象的一部分,抛物线的顶点坐标A(1,3),与x轴的一个交点B(4,0),直



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ͼ,y=ax2+bx-3,ΪE,xAB...
ͼ,y=ax2+bx-3,ΪE,xAB,yڵC,OB=OC=3OA,ֱyڵD. (1)ߵʽE; (2)...
аѧ2016 (һ)ѧ
(-1,0) A.(-3,0) 5.ͼʾ,ü...y ? A.x3 1 ȡֵΧ( x?3 ) D.x...ax 2 +bx+c (a0)ͼԳֱx=1...
y=ax2+bx+cͼλüabcĹϵ
y=ax2+bx+c ͼλü abc Ĺϵ a0 ʱ,,a Խ,ԽС.ڶԳ x=- С;ڶԳ x=- (- b ...
ͼ,y=ax2+bx+c(a0)xڵA(-1,0),B(3,0...
ͼ,y=ax2+bx+c(a0)xڵA(-1,0),B(3,0),yڵC(0,-3).(1)ߵʽM;...
y=ax2+bx+cͼλüabcĹϵ
y=ax2+bx+cͼλüabc...ڷ,Գ,, x , y ύ... 1 ֪ y ? ax 2 ? bx ͼͼ 1 ...
κy=ax2+bx+c(a0)ͼ
(x-h)2+k y=ax2+bx+c (0,0) (h,0) (h,k) () Գ x=0 x=h x=h x= h>0 ʱ,y=a(x-h)2 ͼ y=ax2 ...
2015ѧһ¿ģԾ1,2
+bx+c (a0) ͼһ, ߵĶ A (1, 3) , x һ B(4,0) ,ֱ y2=mx+n(m0) A,B , ...
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ͼ ֱڵA(0,8)B(...1 2 ? 1 ,ax2-5x+c=0,7x2+1=0, ...+bx+c(a0)ͼһ,x=1 ǶԳ,...
3 κy=ax2+bx+cͼ()
1.Ѷκ y=ax2+bx+c(a0)y=a(x-h)2+k ʽΪ___, ___, Գֱ___. x=___ʱ, y ֵ=___; a<...
κ()
Գͬ). 6.(2015?ʮ) y=ax2+bx+c(a,b,c Ϊ, a0)(1,0)(m, 0), 1<m<2, x<1 ʱ,y x ...
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