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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+c(a0)xڵA(-1,0)B(3,...
ͼ,y=ax2+bx+c(a0)xڵA(-1,0)B(3,0),yڵC(0,3). (1)ߵʽD; (2)PΪ߶BDһ...
ͼ,y=ax2+bx+cxڵA(-1,0),Ϊ(...
ͼ,y=ax2+bx+cxڵA(-1,0),Ϊ(1,n),y(0,2)(0,3)֮(˵),н:...
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+c ͼλü abc Ĺϵ a0 ʱ,,a Խ,ԽС.ڶԳ x=- С;ڶԳ x=- (- b ...
2015ѧһ¿ģԾ1,2
+bx+c (a0) ͼһ, ߵĶ A (1, 3) , x һ B(4,0) ,ֱ y2=mx+n(m0) A,B , ...
...)ͼ,y=ax2+bx-3,ΪE,x...
(2014•У)ͼ,y=ax2+bx-3,ΪE,x...C(0,-3)y=a(x+1)(x-3), :a=1, ߵʽ...
y=ax2+bx+cͼλüabcĹϵ
y=ax2+bx+cͼλüabc...ڷ,Գ,, x , y ύ... 1 ֪ y ? ax 2 ? bx ͼͼ 1 ...
ͼ,ֱ֪y=kx-6y=ax2+bx+cཻA,B,...
ͼ,ֱ֪y=kx-6y=ax2+bx+cཻA,B,ҵA(1,-4)ΪߵĶ,Bx. (1)ߵĽʽ; (2)(1)ߵĵڶ...
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 ...
ͼ,y=ax2+bx-3,ΪE,xAB...
ͼ,y=ax2+bx-3,ΪE,xAB,yڵC,OB=OC=3OA,ֱyڵD. (1)ߵʽE; (2)...
رǩ
y ax2 bx c    ʽy x bxͼ    ߶깫ʽ    ߵĶ깫ʽ    ߵĶ    ߶㹫ʽ    ߶    ߶    

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