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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...
22.1.4_κy=ax2+bx+c(a0)ͼͬϰ...
22.1.4_κy=ax2+bx+c(a0)ͼ...(-2,3) 2 B (2,11) 2 y ? x...1 D x Ϊ(-1,0) ,(3,0)...
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 , ...
κy=ax2+bx+cͼ
+bx+c(a0)ͼǶԳƽ y (...2. ƽƷͼ a ͬ y=ax ...y=a(x-h) +k ʽ, ȷ(h, Ȼ...
ƽֱϵ,κy=x2+bx+cͼx...
ƽֱϵ,κy=x2+bx+cͼxAB_/...y=x2-2x-3,A(-1,0) (2) P ֱ BC ·һ,...
...22.1.4 κy=ax2+bx+cͼ(1ʱ)ͬ...
y=ax +bx+c(a0)ͼ 2 1 y=ax +bx+c Ŀ... x Ϊ(-1,0),(3,0) 2 4. y=x +4x+5 Ķ...
y=ax2+bx+cͼϰ
һ Ƶ, . 5 ,y=ax +bx+c(x һ ͼ ...Ϊ . (a<0) ͼ, A B Ǹ Ķ ...
ͼ,y=ax2+bx-4aĶԳΪֱx=,xA,B...
ͼ,y=ax2+bx-4aĶԳΪֱx=,xA,B,yڵC(0,4). (1)ߵʽ,ͼֱд0x4ʱyȡֵΧ; ...
y=ax^2+bx+cͼϵ֮Ĺϵ
1.նκ y = ax + bx + c ( a 0 ) ͼ; ... x = 0 ʱ, y = c , y = ax 2 + bx + c y ...
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y ax2 bx c    ߶깫ʽ    ߵĶ깫ʽ    ߵĶ    ߶    ߶㹫ʽ    ߶    ߶ʽ    

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