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复习完《二次函数》后,在老师布置的作业中,有这样一道选择题:已知二次函数y=x2+bx+c中,其函数y与自变量x之间的部分对应值如下表所示:
After reviewing the “quadratic function”, there is a multiple choice question in the homework assignments of the teacher: The known quadratic function y = x2 + bx + c, the partial correspondence between the function y and the independent variable x is as follows Table shows: