The analytic expression of quadratic function is y = a (x + H) ^ 2 + K or y = a (X-H) ^ 2 + K

The analytic expression of quadratic function is y = a (x + H) ^ 2 + K or y = a (X-H) ^ 2 + K

The standard formula of quadratic function is: y = ax & # 178; + BX + C, a ≠ 0
The collocation method of quadratic function is: y = a (X-H) &# 178; + K, a ≠ 0. In this way, we can know that the symmetry axis of function is x = h, the maximum value is K
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