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关键术语第 10 章:二次方程

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    205011
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    对称轴
    对称轴是穿过抛物线中间的垂直线\(y=ax^2+bx+c\)
    完成正方形
    完成方程是一种用于求解二次方程的方法。
    连续的偶数整数
    连续的偶数整数是紧随其后的偶数整数。 如果一个偶数由 n 表示,则下一个连续的偶数是\(n+2\),其后的下一个偶数是\(n+4\)
    连续奇数整数
    连续的奇数整数是紧随其后的奇数整数。 如果奇数整数由 n 表示,则下一个连续的奇数整数是\(n+2\),后面的下一个奇数是\(n+4\)
    判别性
    在二次公式\(x=\frac{-b±\sqrt{b^2-4ac}}{2a}\)中,量被\(b^2−4ac\)称为判别值。
    抛物线
    两个变量中的二次方程的图形是抛物线。
    二次方程
    二次方程是形式的方程\(ax^2+bx+c=0\),其中\(a≠0\)
    两个变量中的二次方程
    由两个变量组成的二次方程\(a\),其中\(b\)、和\(c\)是实数,\(a≠0\)是一种形式的方程\(y=ax^2+bx+c\)
    平方根属性
    平方根属性指出 if and\(x^2=k\)\(k≥0\)、then\(x=\sqrt{k}\)\(x=−\sqrt{k}\)
    顶点
    抛物线上位于对称轴上的点称为抛物线的顶点;它是抛物线上的最低点还是最高点,取决于抛物线是向上还是向下打开。
    \(x\)-拦截抛物线
    \(x\)-intercepts 是抛物线上的点在哪里\(y=0\)
    \(y\)-截取抛物线
    \(y\)-截距是抛物线上的点\(𝑥=0\)

    关键术语第 10 章:二次方程 is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.