已知抛物线y=ax²+bx+c的顶点坐标是(-½,3),且与抛物线y=4x2的形状相同,则()A.a=4,b=4,c=4B.a=-4,b=-4,c=2C.a=4,b=-4,c=-4D.a=4,b=4,c=4或a=-4,b=-4,c=2
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![已知抛物线y=ax²+bx+c的顶点坐标是(-½,3),且与抛物线y=4x2的形状相同,则()A.a=4,b=4,c=4B.a=-4,b=-4,c=2C.a=4,b=-4,c=-4D.a=4,b=4,c=4或a=-4,b=-4,c=2](/uploads/image/z/13874490-18-0.jpg?t=%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax%26%23178%3B%2Bbx%2Bc%E7%9A%84%E9%A1%B6%E7%82%B9%E5%9D%90%E6%A0%87%E6%98%AF%EF%BC%88-%26%23189%3B%2C3%EF%BC%89%2C%E4%B8%94%E4%B8%8E%E6%8A%9B%E7%89%A9%E7%BA%BFy%3D4x2%E7%9A%84%E5%BD%A2%E7%8A%B6%E7%9B%B8%E5%90%8C%2C%E5%88%99%EF%BC%88%EF%BC%89A.a%3D4%2Cb%3D4%2Cc%3D4B.a%3D-4%2Cb%3D-4%2Cc%3D2C.a%3D4%2Cb%3D-4%2Cc%3D-4D.a%3D4%2Cb%3D4%2Cc%3D4%E6%88%96a%3D-4%2Cb%3D-4%2Cc%3D2)
已知抛物线y=ax²+bx+c的顶点坐标是(-½,3),且与抛物线y=4x2的形状相同,则()A.a=4,b=4,c=4B.a=-4,b=-4,c=2C.a=4,b=-4,c=-4D.a=4,b=4,c=4或a=-4,b=-4,c=2
已知抛物线y=ax²+bx+c的顶点坐标是(-½,3),且与抛物线y=4x2的形状相同,则()
A.a=4,b=4,c=4
B.a=-4,b=-4,c=2
C.a=4,b=-4,c=-4
D.a=4,b=4,c=4或a=-4,b=-4,c=2
已知抛物线y=ax²+bx+c的顶点坐标是(-½,3),且与抛物线y=4x2的形状相同,则()A.a=4,b=4,c=4B.a=-4,b=-4,c=2C.a=4,b=-4,c=-4D.a=4,b=4,c=4或a=-4,b=-4,c=2
形状相同
a=4
y=4(x+1/2)²+3=4x²+4x+4
选A