A problem of quadratic equation of one variable from the point of view of function The list lattice is the corresponding value of the independent variable X of the quadratic function y = ax ^ 2 + BX + C and the function value y, and the judgment equation AX ^ 2 + BX + C = 0 The range of a solution X of (a ≠ 0, a, B, C are constants) is_________ (the answer is 6.18 < x < 6.19) x 6.17 6.18 6.19 6.20 y -0.03 -0.01 0.02 0.04 Now that we have known the three points on the quadratic function, we have determined the function graph and the relationship with the x-axis - whether there is an intersection point. Then the solution X of the equation AX ^ 2 + BX + C = 0 determines the value ah, how is the value range

A problem of quadratic equation of one variable from the point of view of function The list lattice is the corresponding value of the independent variable X of the quadratic function y = ax ^ 2 + BX + C and the function value y, and the judgment equation AX ^ 2 + BX + C = 0 The range of a solution X of (a ≠ 0, a, B, C are constants) is_________ (the answer is 6.18 < x < 6.19) x 6.17 6.18 6.19 6.20 y -0.03 -0.01 0.02 0.04 Now that we have known the three points on the quadratic function, we have determined the function graph and the relationship with the x-axis - whether there is an intersection point. Then the solution X of the equation AX ^ 2 + BX + C = 0 determines the value ah, how is the value range

The meaning of the title is to let you not calculate the specific data, but only require a range
Do you think that for quadratic function, if f (a) 0, then there must be a zero between a and B (that is, the solution of F (x) = 0, that is, the root of the equation AX ^ 2 + BX + C = 0)