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同学们初学二次函数时,容易忽视二次函数y=ax2+bx+c(a≠0)中的系数“a”而造成这样或那样的解题错误,如:一、忽视二次函数中a≠0表
Students beginner quadratic function, easy to ignore the quadratic function y = ax2 + bx + c (a ≠ 0) in the coefficient “a ” and cause one or the other problem-solving errors, such as: A ≠ 0 table in function