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如图,二次函数y=ax2+bx+c(a>0)与坐标轴交于点A、B、C且OA=1,...
如图,二次函数y=ax
2+bx+c(a>0)与坐标轴交于点A、B、C且OA=1,OB=OC=3,则此二次函数的解析式为
.
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