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1.已知抛物线上三点的坐标,运用二次函数“一般式”y=ax2+bx+c(a≠0),通过解方程组确定系数a、b、c.
1. Known coordinates of the three points on the parabola, using the quadratic function “general formula” y = ax2 + bx + c (a ≠ 0), by solving the equation set to determine the coefficient a, b, c.