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The quadratic function of ninth grade mathematics has some good points, such as the application of partial potential form and online solution.
( 1)C(3，2)，P(- 1，0)。

(2) According to the meaning of the question, we can get E(K- 1, k), c(2K- 1, k), P(- 1, 0), and analyze the three-point generation. Or -b/2a=k/2. According to this equation, k=2c- 1, and k is greater than 1, so c is greater than 1. * * * For reference only.

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