高中函数知识点总结
下面是小编整理的高中函数知识点总结,本文共16篇,欢迎您能喜欢,也请多多分享。 一、二次函数概念: 1.二次函数的概念:一般地,形如(是常数,)的函数,叫做二次函数。 这里需要强调:和一元二次方程类似,二次项系数,而可以为零.二次函数的定义域是全体实数. 2. 二次函数的结构特征: ⑴ 等号左边是函数,右边是关于自变量的二次式,的最高次数是2. ⑵ 是常数,是二次项系数,是一次项系数,是常数项.
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